The statement "If the null hypothesis is rejected by a one-tailed hypothesis test, then it will also be rejected by a two-tailed test" is false.
If the null hypothesis is rejected by a one-tailed hypothesis test, it does not necessarily mean that it will also be rejected by a two-tailed test. In a one-tailed test, the rejection region is located in only one tail of the distribution, while in a two-tailed test, the rejection region is divided between both tails of the distribution.
Therefore, the decision to reject the null hypothesis in a one-tailed test is based on evidence of an effect in a specific direction, whereas in a two-tailed test, it requires evidence of an effect in either direction. Consequently, a rejection in a one-tailed test does not automatically imply rejection in a two-tailed test.
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Find the absolute maximum and absolute minimum values off on the given interval.
f(x) =xe-x2/128 [-7, 16]
The absolute maximum and minimum value of f(x) on the interval [-7, 16] is 2.358, -2.358 at x = 8 and x = -8
How to find the absolute maximum and absolute minimum values of the function f(x)?To find the absolute maximum and absolute minimum values of the function \(f(x) = x*e^{(-x^2/128)}\) on the interval [-7, 16], we need to look for the critical points and the endpoints of the interval.
First, let's find the critical points by taking the derivative of f(x) and setting it equal to zero:
\(f(x) = x*e^{(-x^2/128)}\)
\(f'(x) = e^{(-x^2/128)} - (x^2/64)*e^{(-x^2/128)}\)
Setting f'(x) equal to zero, we get:
\(e^{(-x^2/128)} - (x^2/64)e^{(-x^2/128)} = 0\)
\(e^{(-x^2/128)(1 - x^2/64) }= 0\)
So either\(e^{(-x^2/128)} = 0\) (which has no solutions), or\(1 - x^2/64 = 0\), which gives us x = ±8.
Next, we need to check the endpoints of the interval:
\(f(-7) = -7e^{(-49/128)} \approx -0.091\)
\(f(16) = 16e^{(-256/128)} \approx 0.090\)
Now we can compare the values of f(x) at the critical points and endpoints to find the absolute maximum and absolute minimum values:
f(-7) ≈ -0.091
\(f(8) = 8e^{(-64/128)} \approx 2.358\)
\(f(-8) = -8e^{(-64/128)} \approx -2.358\)
f(16) ≈ 0.090
So the absolute maximum value of f(x) on the interval [-7, 16] is approximately 2.358, and it occurs at x = 8.
The absolute minimum value of f(x) on the interval [-7, 16] is approximately -2.358, and it occurs at x = -8.
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1.
A car moves 200m in 4 s. What is the speed of the car?
I
Answer:
50m/s
Step-by-step explanation:
Speed = Distance / Time:
Speed = \(\frac{200}{4}\) = \(50 m/s\)
Answer:
50mps
Step-by-step explanation:
divide 200 by 4
What is the value of x in the equation 2x + 3 = 11?
Answer:
2x4=8+3=11
Step-by-step explanation:
first multiply 2 times 4 equals 8 and add 3 which equals 11.
|y+8|-5=2 solve equation
Step-by-step explanation:
|y + 8| - 5 = 2
|y + 8| = 7
Either y + 8 = 7 or y + 8 = -7.
Hence y = -1 or y = -15.
Rich Borne teaches Chemistry 101. Last week he gave his students a quiz. Their scores are listed below. 24 31 47 29 31 16 48 41 50 54 37 22 54 38 7 16
The quiz scores of Rich Borne's Chemistry 101 students are as follows: 24, 31, 47, 29, 31, 16, 48, 41, 50, 54, 37, 22, 54, 38, 7, and 16.the performance of Rich Borne's Chemistry 101 students on the quiz
To analyze this data, we can calculate various descriptive statistics such as the mean, median, mode, range, and standard deviation. The mean (average) score can be obtained by summing up all the scores and dividing by the total number of scores. The median represents the middle value when the scores are arranged in ascending order. The mode refers to the most frequently occurring score. The range is the difference between the highest and lowest scores, indicating the spread of the data. The standard deviation measures the variability or dispersion of the scores around the mean.
By calculating these descriptive statistics, we can gain insights into the performance of Rich Borne's Chemistry 101 students on the quiz and understand the central tendency and variability of their scores.
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What is the area of the triangular base?
Answer:
90cm2
Step-by-step explanation:
1/2x base x height.
1/2 x10 x 18
90cm2
the inverse operation of squaring a number is finding the
Answer:
is finding the square root
The inverse operation of squaring a number is finding the square root of that number. The square root of a number "x" is the value that, when squared, gives the original number.
When a number is squared, it is multiplied by itself. For example, squaring the number 4 gives 4^2 = 16.
The inverse operation undoes the effect of squaring and returns you to the original number. In this case, finding the square root of a number is the inverse operation of squaring.
The square root of a number "x" is a value that, when squared, gives the original number. It is denoted by the symbol √x.
For example, if you have the number 25 and you want to find its square root, you calculate:
√25 = 5
5 is the square root of 25 because when you square 5 (5^2), you get 25.
The inverse operation of squaring a number is finding the square root of that number. The square root of a number "x" is the value that, when squared, gives the original number. The concept of square root and squaring are inverse operations that are used in various mathematical calculations and problem-solving.
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if the measure of angle ADC is 59 , what is the measure of angle BDC
The angle of BDC is 60 degrees.
The Angle Sum Property: What Is It?The angle sum property of a triangle states that the sum of a triangle's three internal angles is 180 degrees. A triangle is a closed figure made up of three line segments that have both internal and external angles. When the values of the other two angles are known, the measure of an unknown interior angle can be determined using the angle sum property.
The data listed above can be inserted into our diagram. ADB and BDC complement one another, therefore their combined degree measurement is 180. Thus, m∠ADB is equal to 180 – 60, or 120 degrees.
Given,
∠ADC = 59
∠BDC = ?
∠ADB = ∠BCD
∠BCD = 90
∠ADB = 90
∠ADC = 59
∠ADB + ∠BDC = 59
90 + ∠BDC = 59
∠BDC = -31
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How many different 7-place license plates are possible if the first 2 places are for letters and the other 5 for numbers probability?
The total number of possible 7-place license plates are 67600000.
Given: A 7-plate license plate. 2 places are for letters and 5 places are for numbers. To find how many different 7-plate license plates are possible
Let's solve the given problem:
The license plate has 7 places. 2 places are for letters and the remaining 5 places are for numbers.
Combination of letters: As there are no restrictions given in the question, so the first letter can be any alphabet out of the 26 alphabets (A, B, C, D, ......... Z). So the first place for the letter can be filled in ²⁶C₁ ways that are 26 ways. Also for the second place, as the letters can repeat so it can be filled in ²⁶C₁ ways too which are 26 ways. Therefore, the possible ways in which the place for two letters can be filled is 26 × 26 ways = 676 ways.Combination of numbers: As there are no restrictions given in the question so the first number can be any of the numbers out of the 10 numbers (10, 1, 2, 3, ....... 9). So the first number can be filled in ¹⁰C₁ = 10 ways. Similarly, as the numbers can repeat so the 2nd, 3rd, 4th and 5th numbers can be filled in ¹⁰C₁ ways that all the other places can be filled in 10 ways each. Therefore the total number of ways in which the place for 5 numbers can be filled is 10 × 10 × 10 × 10 × 10 ways = 100000 ways.Therefore, the total number of ways in which the 7-place license plate can fill are: Total possible ways in which the two letters can be filled × Total possible ways in which the 5 number places can be filled
= 676 × 100000
= 67600000 ways
Hence the total number of possible 7-place license plates are 67600000.
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Use this common denominator to find equivalent fractions for 1 2/3 and 3/4 if 1 2/3=1 and 3/4=
The required equivalent fractions for 1 10/15 and 9/12.
Given, two mixed fractions 1 2/3 and 3/4, determine equivalent fractions using 15 as the common denominator.
Simplification:
The process in mathematics of manipulating and interpreting functions to make a function or expression simpler or easier to understand is called simplification, and the process is called simplification.
1. Simplify fractions by canceling all common factors of the numerator and denominator and writing the fraction in its lowest/simplest form.
2. Simplify mathematical expressions by grouping and combining similar terms. This makes expressions easy to understand and solve.
According to the Question:
Here,
First
= 1 2/3
= 1+ 2 / 3
= 1 + 2 × 5 / 3 × 5
= 1 + 10 / 15
Again,
Second,
= 3 / 4
= 3 × 3 / 4 × 3
= 9/12
Thus, the required equivalent fractions for 1 10/15 and 9/12.
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what is 1875 ÷ 125 (show ur work do long divison)
answer is 15 explained in image .
Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two sides
of this triangle?
3
5 cm and 8 cm
O 6 cm and 7 cm
0 7 cm and 2 cm
O 8 cm and 9 cm
Answer:
8 cm and 9 cm
Step-by-step explanation:
In order to find out, you add both 8 and 9 together. If the sum is above/higher than the number 13, they can all be made into a triangle. 8+9 is 17 and 17 is higher than 13.
hope this helps!
9.4 = -t/6.5 what is t =
Answer:
t=-61.1
Step-by-step explanation:
You first want to isolate t. You have to multiply both sides by 6.5 to make t by itself. 6.5x9.4=61.1. This will make the equation -t=61.1. You wan to make t positive so we have to divide each side by -1. t=-61.1. This means that t=-61.1
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What is the factorization of 81a6 - 100? (9a2 − 10)(9a3 + 10) (9a2 − 10)(9a3 − 10) (9a3 − 10)(9a3 + 10) (9a3 − 10)(9a3 − 10)
Answer:
(9a³ − 10)(9a³ + 10)
Step-by-step explanation:
Difference of squares
(9a³ − 10)(9a³ + 10)
Answer:
What is the factorization of 81a6 - 100?
(9a2 − 10)(9a3 + 10) (9a2 − 10)(9a3 − 10) (9a3 − 10)(9a3 + 10) <<< CORRECT (9a3 − 10)(9a3 − 10)
Step-by-step explanation:
Oct 2021 Edge
how much charge is enclosed by spheres of radii 5, 10, and 20 cmcm ?
Therefore, the charge enclosed by the spheres of radii 5 cm, 10 cm, and 20 cm are:Qencl = 0.0004 C and Qencl = 0.0036 C and Qencl = 0.0288 C.
To find the charge enclosed by spheres of radii 5 cm, 10 cm and 20 cm,
we need to use Gauss’s Law, which relates the electric flux through a closed surface to the charge enclosed by that surface. It states that the electric flux through a closed surface is proportional to the charge enclosed by that surface. Mathematically, Gauss’s Law is expressed as:
φE = Qencl/ε0
where,φ
E = electric flux through the surface
Qencl = charge enclosed by the surfaceε0 = permittivity of free space
Now, we have to find the charge enclosed by the spheres of radii 5 cm, 10 cm, and 20 cm.
Since the spheres have uniform charge distributions, the electric field inside the sphere is uniform and can be taken as E = Q/4πεr² where Q is the total charge on the sphere, r is the radius of the sphere, and ε is the permittivity of free space.
So, we have
Q = E × 4πεr²Q = k × QenclQencl = Q/k
where k = 1/4πε0Now, using the expression for charge enclosed, we can find the charge enclosed by each sphere:
Charge enclosed by sphere of radius 5 cmQencl = Q/k
Qencl = E × 4πεr²/k
Qencl = (9 × 10⁹ Nm²/C²) × [(3 × 10⁻⁵ m)² × 4π]/(1/4πε₀)
Qencl = 3πε₀ × (0.005m)² × 9C
Charge enclosed by sphere of radius 10 cmQencl = Q/k
Qencl = E × 4πεr²/kQencl = (9 × 10⁹ Nm²/C²) × [(10 × 10⁻⁵ m)² × 4π]/(1/4πε₀)
Qencl = 3πε₀ × (0.01m)² × 9CCharge enclosed by sphere of radius 20 cm
Qencl = Q/k
Qencl = E × 4πεr²/k
Qencl = (9 × 10⁹ Nm²/C²) × [(20 × 10⁻⁵ m)² × 4π]/(1/4πε₀)
Qencl = 3πε₀ × (0.02m)² × 9C
Therefore, the charge enclosed by the spheres of radii 5 cm, 10 cm, and 20 cm are:
Qencl = 0.0004 C
Qencl = 0.0036 C
Qencl = 0.0288 C
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I need help really bad
Find the measure of x.
Answer:
139.5
Step-by-step explanation:
cos(angle) = adjacent/hypotenuse
cos(55) = 80/x
x*cos(55) = 80
x = 80/cos(55)
x = 139.4757
x = 139.5 (rounded)
Answer:
Step-by-step explanation:
90 + 55 + a = 180
145 + a = 180
a = 180 -145
a = 35
secQ = B/H
1.3 = 80 / x
x = 80/1.3
x = 61.6
In 2018, joshua gave $15,000 worth of xyz stock to his son. in 2019, the xyz shares are worth $25,000. what was the gift tax in 2018?
"0" was the gift tax in 2018.
Gift taxes are paid by either the giver or the recipient?
The recipient of a present normally is not responsible for paying gift tax, which is the standard response to the question "do I have to pay taxes on a gift?"However, when the gift exceeds the yearly gift tax exclusion level, which is $15,000 per recipient for 2019, the giver will typically submit a gift tax return.You'll report your gift to the IRS using this form. This form is used by the IRS to keep track of any gifts you make that exceed the yearly exclusion over the course of your lifetime. 2019's gift tax rate is 0.A gift tax is not present. There is no gift tax because gifts up to $15,000 are tax-free.
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which of the following is a factor in the general formula for factoring the difference of cubes?
a. (a^2-ab-b^2)
b. (a^2-ab+b^2)
c. (a^2+ab-b^2)
d. (a^2+ab+b^2)
Answer:
D: a² + ab + b²
Step-by-step explanation:
The general formula used for factoring a difference in cubes is;
a³ - b³ = (a - b)(a² + ab + b²)
Thus, the factors are either;
(a - b) or (a² + ab + b²)
Looking at the given options, the only one that is a factor is (a² + ab + b²) which is option D.
Answer:
the answer (a-b) (a^2-ab+b^2)
Step-by-step explanation:
I took the quiz ;)
I need help on this one
Applying PL, construct a symbolicmodel of the logical structure of the following argument. Construct a truth table to determine if the argument is valid. Be sure to state whether the argument is valid or invalid. If the argument is invalid then indicate a row that shows this. (4 points)
Jayco qualifies as a small business if and only if it has sales that are not large enough to influence its environment and it is privately owned by a small group of individuals. Jayco does not qualify as a small business. Therefore, Jayco must not be privately owned by a small group of individuals.
Please use these symbols: ~, v, • , ⊃, ≡
We can see that there is at least one row where all premises are true (row 7), but the conclusion is false. Therefore, the argument is invalid.
To construct a symbolic model of the argument, let's define the following symbols:
P: Jayco qualifies as a small business.
Q: Jayco has sales that are not large enough to influence its environment.
R: Jayco is privately owned by a small group of individuals.
Now we can represent the statements in symbolic form:
Premise 1: P ≡ (Q • R)
Premise 2: ~P
Conclusion: ~R
To determine if the argument is valid or invalid, we can construct a truth table:
| P | Q | R | P ≡ (Q • R) | ~P | ~R |
|---|---|---|-------------|----|----|
| T | T | T | T | F | F |
| T | T | F | F | F | T |
| T | F | T | T | F | F |
| T | F | F | F | F | T |
| F | T | T | F | T | F |
| F | T | F | T | T | T |
| F | F | T | F | T | F |
| F | F | F | T | T | T |
From the truth table, we can see that there is at least one row where all premises are true (row 7), but the conclusion is false. Therefore, the argument is invalid.
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#
f(x) = x
f(x) = 3
5
6
f(x)=3-x
f(x) = 1
Domain
3
0
x=2
2
f(x) = 2
Function Equation
f(x) = 5-x
f(x) = x is a simple linear function with a slope of 1, f(x) = 3 5 6 is a constant function, f(x) = 3-x is a linear function with a negative slope of -1, f(x) = 1 is a constant function, f(x) = 2 is a constant function
What is a constant function?A constant function is a mathematical function whose output value is the same for every input value
From the given parameters, f(x) = x is a simple linear function with a slope of 1, this implies that for every unit increase in x, the value of y increases by 1.
Also, f(x) = 3 5 6 is a constant function, where the value of y is always 3 5 6, regardless of the value of x.
In the same way, f(x) = 3-x is a linear function with a negative slope of -1, which means that for every unit increase in x, the value of y decreases by 1. The fourth function f(x) = 1 is a constant function, where the value of y is always 1, regardless of the value of x.
The domain of the fifth function is 3 0, which means that x can take any value between 3 and 0.
The sixth function f(x) = 2 is a constant function, where the value of y is always 2, regardless of the value of x.
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the works man family car travles 165 miles over 3 hours. Their cousins family car travles 150 miles over 2 hours. If the family reunion is 900 miles away for both familys and asuming both familys continue at the same rate who will arive first? what is the speed of each family?
Thank you so much
Answer:
see answers down below
Step-by-step explanation:
The works man family is driving at a speed of 55 miles per hour
Their cousins family drives at 75 miles and hour. (use the miles/hours ratio like I told you in the last answer)
900 miles/75 miles traveled by their cousins each hour equals 12 hours.
If the works man family is driving at 55 miles and hour, 900 miles needed to be traveled/ 55 miles an hour equals 16.3636363636. This is more than 12 hours, and that means that their cousins will arrive first. Hope this helps!
Triangle XYZ is similar to Triangle X'Y'Z'.
A. To transform triangle XYZ to AX'Y'Z', following sequence of transformations is applied: Translation, Rotation, Dilation.
What is transformations of triangle?Transformations of a triangle are changes made to the position, size, or orientation of the triangle in a coordinate plane.
There are four types of transformations that can be applied to a triangle.
A. To transform triangle XYZ to AX'Y'Z', the following sequence of transformations can be applied:
Translation: Translate triangle XYZ so that point X coincides with point X'. This can be done by moving the entire triangle 6 units to the left and 8 units up.
Rotation: Rotate the translated triangle around point X' by an angle of 135 degrees in the counterclockwise direction. This can be done by applying a rotation matrix:
[ cos(135) -sin(135) 0 ] [ x ]
[ sin(135) cos(135) 0 ] * [ y ]
[ 0 0 1 ] [ 1 ]
Dilation: Dilate the rotated triangle with center X' by a scale factor of 1/2. This can be done by multiplying the coordinates of each point by 1/2 with respect to point X'.
B. No, a dilation alone is not enough to show similarity of two figures. Similarity of two figures requires that the figures have the same shape but not necessarily the same size. In addition to dilation, the figures could be subject to other transformations such as translation, rotation, and reflection. Therefore, to show similarity between two figures, it is necessary to demonstrate that the corresponding angles of the figures are congruent and that the corresponding sides are proportional.
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The diameter of a circle is 4 centimeters. What is the circle's circumference?
Use 3.14 for л.
The formula that you must used to determine the circumference of a circle is C = \(\pi\)d
First things first, substitute your diameter into the formula provided above,
C = \(\pi\)(3.14)(4)
Next you've substituted the diameter into the formula, you may calculate it.
C = \(\pi\)(3.14)(4) = 12.57
Finally, it has been determined that the answer to your question is 12.57
Find the solution set of the quadratic equation over the set of complex numbers
-7x^2+12x=10
Answer: it’s A
Step-by-step explanation:
I chose b and got it wrong and showed that it was a
A bookstore had copies 180 of a magazine. Yesterday the bookstore sold 5/6 of these copies. How many copies were sold yesterday?
Answer:
150
Step-by-step explanation:
180 divide by six is 30 and 30 times 5 is 150
50 POINTS HELP NOW
Find the logarithm base 10 of each number:
10
The logarithm base 10 of the number 10 is 1
How to solve logarithm ?We have to find logarithm base 10 of number 10.
Therefore, using logarithm rule
logₐ a = 1
Hence,
log₁₀ 10 = 1
Therefore, logarithm base 10 of the number 10 is 1
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Answer:
1
Step-by-step explanation:
0.5 (n-4) -3 = 3 - (2n+3)
Answer:
n = 2
Step-by-step explanation:
0.5n - 2 - 3 = 3 - 2n -3
0.5n + 2n = 2 + 3 + 3 -3
2.5n = 5
n = 2
Answer:
Step-by-step explanation:
0.5n - 2 - 3 = 3 - 2n - 3
Solving like terms
0.5n - 5 = - 2n
-5 = - 2n - 0.5n
-5 = - 2.5n
-5/-2.5 = n
2 = n
selection that, for a given trait, increases fitness at both extremes of the phenotype distribution and reduces fitness at middle values.
Disruptive selection is a type of natural selection that favors extreme values of a trait while reducing the fitness of individuals with intermediate values. This pattern occurs when the environment or selective pressures favor individuals at both ends of the phenotype distribution.
Disruptive selection occurs when individuals with extreme phenotypes have higher fitness compared to those with intermediate phenotypes. This can happen in various scenarios. For example, in a habitat with two distinct resource types, individuals with specialized traits for each resource type may have higher survival or reproductive success, leading to the maintenance of two distinct phenotypes.
In disruptive selection, the selection pressure against intermediate phenotypes reduces their fitness, causing a bimodal distribution where individuals at the extremes have higher relative fitness compared to those in the middle. Over time, disruptive selection can result in the divergence of the population into two or more distinct forms, potentially leading to the formation of new species if reproductive isolation occurs.
This type of selection can play a significant role in shaping the evolution and adaptation of populations by promoting and maintaining phenotypic diversity in response to selective pressures.
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