3: Gathering data from the first 25 people you encounter at a local mall is an example of ________.
Answers
Given:
Gathering data from the first 25 people you encounter at a local mall.
Required:
We need to classify the sample.
Explanation:
Recall that a stratified sample divides a sample into subgroups.
Gathering data from the first 25 people you encounter at a local mall is not divided into subgroups. it is not a stratified sample.
Recall that a convenience sample is taken from a group of people easy to contact or reach.
Gathering data from the first 25 people you encounter at a local mall is not taken as a convenience sample.
Recall that systematic sampling is a probability sampling method where researchers select members of the population at a regular interval.
Gathering data from the first 25 people you encounter at a local mall is not selected at regular intervals. It is not a systematic sampling.
Recall that random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen.
Gathering data from the first 25 people you encounter at a local mall is chosen by equal probability.
Final answer:
Random sampling.
Related Questions
when x=2 and y=4, by how much does the value of 4x^2 - y exceed the value of 3x^2 - 3y
Answers
Step-by-step explanation:
4(2)² - 4 =
4(4) - 4 = 12
3(2)² - 3(4)
3(4) - 12
12 - 12 = 0.
It exceeds the value by 12 :)
9. Difference between the place values of "1" in 3116365 is
Answers
Can someone please help, ty!!
Will mark brainliest!
Answers
Answer:
34
Step-by-step explanation:
The sum of the angles of a triangle is 180
26x+6 + 21x-1 +11x+1 = 180
Combine like terms
58x +6 = 180
Subtract 6 from each side
58x = 180-6
58x = 174
Divide by 58
58x/58 =174/58
x=3
We want <C
<C = 11x+1 = 11*3+1 = 33+1 = 34
I am thinking of 2 numbers. The first number is 1 more than twice the second number
Answers
Answer:
The first number is 5 the second number is 2
Step-by-step explanation:
I think this is right. have a great day :)
Are the following figures similar?
Trapezoids ABCD and EFGH are shown. Angle A equals 137 degrees, Angle B equals 90 degrees, Angle C equals 90 degrees, Angle D equals 43 degrees, Angle E equals 136 degrees, Angle F equals 90 degrees, Angle G equals 90 degrees, Angle H equals 44 degrees.
Answers
No, the trapezoids are not similar because their corresponding angles do not have the same measures.
The given trapezoids ABCD and EFGH can be analyzed to determine if they are similar. Similarity in geometric figures implies that their corresponding angles are congruent, and their corresponding sides are proportional.
Let's examine the angles of the trapezoids:
In trapezoid ABCD:
Angle A = 137 degrees
Angle B = 90 degrees
Angle C = 90 degrees
Angle D = 43 degrees
In trapezoid EFGH:
Angle E = 136 degrees
Angle F = 90 degrees
Angle G = 90 degrees
Angle H = 44 degrees
By comparing the angles, we can observe that angles B and F are both right angles (90 degrees) in both trapezoids. Additionally, angles C and G are also right angles (90 degrees) in both trapezoids.
However, angles A and E, as well as angles D and H, do not have the same measures. Angle A measures 137 degrees in trapezoid ABCD, while angle E measures 136 degrees in trapezoid EFGH. Similarly, angle D measures 43 degrees in trapezoid ABCD, while angle H measures 44 degrees in trapezoid EFGH.
Since the corresponding angles in the two trapezoids do not have the same measures, we can conclude that trapezoids ABCD and EFGH are not similar.
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If the variance for a set of data equals 8.1, find the standard deviation.
Answers
The standard deviation for this set of data is approximately 2.85.
To find the standard deviation, we first need to take the square root of the variance. Therefore, the standard deviation for the given data set is the square root of 8.1, which is approximately 2.846.
To find the standard deviation of a set of data when the variance is given, you simply need to take the square root of the variance. In this case, the variance equals 8.1.
Step 1: Identify the variance, which is 8.1.
Step 2: Take the square root of the variance.
Standard Deviation = √(Variance) = √(8.1)
Step 3: Calculate the square root of 8.1.
Standard Deviation ≈ 2.85
So, the standard deviation for this set of data is approximately 2.85.
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How many groups of 3/4 are in each of the following quantities?
Type your response in each box below.
1. 11/4 has __
groups of 3/4.
2. 6 1/2 has ___
groups of 3/4.
Answers
Answer:
vb\
Step-by-step explanation:
A rhombus and a triangle are equal in areas. if the base and height of the triangle are 24.8 cm and 5.5 cm respectively and the length of one diagonal of the rhombus is 22 cm, find the length of other diagonal of the rhombus.
Answers
As we know that
Area of triangle = ½ × Base × Height
Area = ½ × 24.8 × 5.5Area = 1 × 12.4 × 5.5Area = 12.4 × 5.5Area = 68.2 cm²Now,Area of rhombus = ½ × D1 × D2
68.2 = ½ × 22 × D268.2 × 2 = 22 × D2136.4 = 22 × D2136.4/22 = D26.2 = D2D2=6.2Hence :-Other Diagonal is 6.2 cm.\(\begin{gathered} \\ \end{gathered}\)
P = a + b + c
P = 14, a = 6, c = 6
Solve for b.
b=
Answers
Answer:
b=2
Step-by-step explanation:
14= 6+6 +b
14=12+b--> 2=b
A small artichoke contains about 9 milligrams of vitamin C. It also contains about 15% of the recommended amount of vitamin C an average adult should get each day. About how many artichokes would an average adult have to eat in a day to get the necessary amount of vitamin C.
Answers
Answer:
7 Artichokes
Step-by-step explanation:
To figure this out, we need to find out how much Vitamin C an average adult needs. We set up a proportion.
\(\frac{9}{15} = \frac{x}{100}\)
\(15x=900\)
\(x=60\)
Now, since each artichoke is worth 9 milligrams, we divide 60 by 9.
\(60/9=6.66666...\)
So, to get the necessary amount of Vitamin C, we round up to 7.
determine the inclination of the following straight line
1. y=x+3 2) 3x-2y = 6
Answers
The inclination of the line represented by the equation y = x + 3 is 1, and the inclination of the line represented by the equation 3x - 2y = 6 is 3/2.
To determine the inclination (or slope) of a straight line, we can examine the coefficients of the variables x and y in the equation of the line.
The inclination represents the ratio of how much y changes with respect to x.
Equation: y = x + 3
In this equation, the coefficient of x is 1, which means that for every increase of 1 in x, y also increases by 1.
This indicates that the inclination of the line is positive, meaning it slopes upwards as x increases.
Since the coefficient of x is 1, the inclination can be expressed as 1/1 or simply 1.
Equation: 3x - 2y = 6
To determine the inclination, we need to rearrange the equation in slope-intercept form (y = mx + b), where m represents the slope.
First, isolate y:
-2y = -3x + 6
Divide the entire equation by -2 to solve for y:
y = (3/2)x - 3
Now we can observe that the coefficient of x is 3/2.
This indicates that for every increase of 1 in x, y increases by 3/2. Therefore, the inclination of this line is positive, indicating an upward slope.
The inclination can be expressed as 3/2.
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all group of 43 people are going to a concert if 6 people fit in each car how many cars will they need to take
Answers
Answer:
mankinmd
Step-by-step explanation:
Answer:
7.1
Step-by-step explanation:
u need to divided 43÷6 which gives u 7.1
Classify the triangle by its sides.
Answers
Answer:
It would be C
Step-by-step explanation:
This triangle has two equal sides and one side that is not equal to the other two, so it is an isosceles triangle.
Answer:
A
Explanation:
Scalene triangle: if none of the three sides of a triangle are equal to each other, it is called a scalene triangle.
standard form. (x+8)(x−6)
Answers
Answer:
x^2-2x-48
Step-by-step explanation:
FOIL
Firsts = x*x = x^2
outside = x*-6 = -6x
inside = 8*x = 8x
lasts = 8*-6 = -48
add all together x^2-6x+8x-48 = x^2-2x-48
Answer:
x² + 2x - 48
Step-by-step explanation:
( x + 8 ) ( x - 6 )
= x ( x - 6 ) + 8 ( x - 6 )
= x*x - 6*x + 8*x + 8*( - 6 )
= x² - 6x + 8x - 48
= x² + 2x - 48
Data on U.S. work-related fatalities by cause follow (The World Almanac, 2012). Cause of Fatality Number of Fatalities Transportation incidents 1795 Assaults and violent acts 837 Contact with objects and equipment 741 Falls 645 Exposure to harmful substances or environments 404 Fires and explosions 113 Assume that a fatality will be randomly chosen from this population. Round your answers to four decimal places. a. What is the probability the fatality resulted from a fall
Answers
Answer:
0.1634 = 16.34% probability the fatality resulted from a fall
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question, we have that:
1795 + 837 + 741 + 645 + 404 + 113 = 4535 total fatalities.
Of those, 741 from falls.
741/4535 = 0.1634
0.1634 = 16.34% probability the fatality resulted from a fall
If w is FALSE, x is TRUE, and y is FALSE, what is ((w OR Y') AND (x' AND y')) OR ((w OR y') AND (x OR Y)') ? A) TRUE B) Not enough information.C) FALSE D) NULL
Answers
After solving the logical operations it can be determined that the correct answer is C) FALSE.
What are logical operations?Logical operations are phrases that connect expressions to test if they are true or not.
What does the complement sign mean?The complement (') sign means that the opposite value of the variable is needed. For example if y is false, y' means true.
Let False = 0 and True = 1
= ((0 OR 0') AND (1' AND 0')) OR ((0 OR 0') AND (1 OR 0)')
= ((0 OR 1) AND (0 AND 1)) OR ((0 OR 1) AND (1)')
= (1 AND 0) OR (1 AND 0)
= 0 OR 0
= 0
Hence, the answer is C) FALSE
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how to divide −6x2−3x+12 by 3x−3.
Answers
solve -6x2-3x+12 dived by 3x-3 using pemdas
Step-by-step explanation:
The question is how to divide this this is how to solve it
Cam borrows $1,00 from her bank. She will pay back the loan at a simple annual interest rate of 4% over 4 years. How much will she pay back altogether?
Answers
The discounted price of a $150 cell phone on sale for 20% off.
Answers
Answer: $120
Step-by-step explanation:
20% off so that means you have 80% left, and that is 0.8 in decimal form. 150x0.8 = 120
Answer: $30
Step-by-step explanation: I do not get the question you're asking but if is is " What is 20% of $150?", then the answer is $30.
Rewrite this statement below to be a stronger claim.
Chocolate milk is better than plain milk.
Answers
When you take a glass of milk and stir in some luxurious liquid chocolate you have a delicous substance called chocolate milk. Plain milk is boring and has no personality whereas chocolate milk is fun, delicous, colorful. Plain milk is like so last year!
The original price of sunglasses is $25. The sale price is 20% off the original price. How much money will be saved (what is the discount)?
Answers
Step-by-step explanation:
5 $
Elena receives $95 per year in simple interest from three investments totaling $2100 . Part is invested at 3%, part at 4%, and part at 5%. There is $1000 more invested at 5% than at 4%. Find the amount invested at each rate.
The amount invested at 3% is $
the amount invested at 4% is $
and the amount invested at 5% is $
Answers
The amount invested at 3% is $400, the amount invested at 4% is $700, and the amount invested at 5% is $1000.
Let's assume the amount invested at 4% is x dollars.
According to the given information, the amount invested at 5% is $1000 more than the amount invested at 4%.
So, the amount invested at 5% is (x + $1000).
The total amount invested is the sum of the amounts invested at each rate, which is $2100.
Therefore, we can write the equation:
x + (x + $1000) + (amount invested at 3%) = $2100
Now, we can calculate the amount invested at 3%.
We subtract the sum of the amounts invested at 4% and 5% from the total investment:
(amount invested at 3%) = $2100 - (x + x + $1000) = $2100 - (2x + $1000)
Given that Elena receives $95 per year in simple interest from the investments, we can use the formula for simple interest:
Simple Interest = Principal × Interest Rate
The interest earned from the investment at 3% is (amount invested at 3%) × 0.03, the interest earned from the investment at 4% is (amount invested at 4%) × 0.04, and the interest earned from the investment at 5% is (amount invested at 5%) × 0.05.
According to the problem, the total interest earned is $95.
So we can write the equation:
(amount invested at 3%) × 0.03 + (amount invested at 4%) × 0.04 + (amount invested at 5%) × 0.05 = $95
Now we can substitute the expression for (amount invested at 3%) and solve for x.
Once we have the value of x, we can calculate the amounts invested at 3%, 4%, and 5% using the given information.
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A motorist travels 228 kilometers in 6 hours. At that rate, how long will it take him to travel and additional 247 kilometers?
Answers
Answer:
The motorist's rate is:
rate = distance / time
where distance is measured in kilometers and time is measured in hours.
We are given that the motorist travels 228 kilometers in 6 hours, so we can use this information to find the rate:
rate = distance / time = 228 km / 6 hours = 38 km/hour
To find how long it will take the motorist to travel an additional 247 kilometers at this rate, we can use the same formula and solve for time:
time = distance / rate = 247 km / 38 km/hour ≈ 6.5 hours
Therefore, it will take the motorist approximately 6.5 hours to travel an additional 247 kilometers at the same rate of 38 km/hour.
Mathematics question
Answers
Answer:
8
Step-by-step explanation:
MP=16
NP = 14
So that means N is farther to O by 2 units
So: 10-2 = 8
For the linear function ƒ(x) = 7x – 4, find the value of ƒ(x) at x = –2, 0, and 2.Question 3 options:A) ƒ(–2) = 10, ƒ(0) = –4, ƒ(2) = –18B) ƒ(–2) = –18, ƒ(0) = 4, ƒ(2) = 10C) ƒ(–2) = 18, ƒ(0) = –4, ƒ(2) = 10D) ƒ(–2) = –18, ƒ(0) = –4, ƒ(2) = 10
Answers
From the question,
We are given the function
\(f(x)=7x-4\)We are to find the value of f(x) at
\(x=-2,x=0,x=2\)When x = - 2 then
\(\begin{gathered} f(-2)=7(-2)-4 \\ f(-2)=-14-4 \\ f(-2)=-18 \end{gathered}\)When x = 0, then
\(\begin{gathered} f(0)=7(0)-4 \\ f(0)=0-4 \\ f(0)=-4 \end{gathered}\)when x = 2, then
\(\begin{gathered} f(2)=7(2)-4 \\ f(2)=14-4 \\ f(2)=10 \end{gathered}\)Therefore, the values of f(x) at x = -2, x = 0, x = 2 are
f(-2) = -18
f(0) = -4
f(2) = 10
Hence the correct option is D
2 3/4 of 500grams in step by step calculator
Answers
Answer:
To calculate 2 3/4 of 500 grams, follow these steps:
1. Convert the mixed number to an improper fraction:
2 3/4 = (2 x 4 + 3)/4 = 11/4
2. Multiply the improper fraction by 500:
11/4 x 500 = (11 x 500)/4 = 2,750/4
3. Simplify the fraction by dividing the numerator and denominator by their greatest common factor, which is 2:
2,750/4 = (2 x 1,375)/(2 x 2) = 1,375/2
Therefore, 2 3/4 of 500 grams is equal to 1,375/2 grams or 687.5 grams.
Step-by-step explanation:
$
1. Una esfera de latón de 3 pies
cúbicos a 22°C se expuso al calor hasta alcanzar una temperatura de
66°C. ¿Cuál será su nuevo volumen'si el coeficiente de dilatación lineal del latón es de 18x1095
Answers
Answer:
Tell in english plss
Step-by-step explanation:
i dont understangd okk
On a piece of paper graph f(x) = 3x. Then determine which answer choice matches the graph you drew
Answers
Answer:
--
Step-by-step explanation:
Show all the options please
Not able to see all options
I do not understand this can someone please help?
Answers
Answer:
1. x = 18
2. x = 154
Step-by-step explanation:
2 12
------- = -------
3 x
3 × 12 = 36
2 × x = 2x
36 = 2x
÷2 ÷2
---------------
x = 18
----------------------------------------------------------------------------------------------------------
6 84
------- = -------
11 x
6 × x = 6x
84 × 11 = 924
6x = 924
÷6 ÷6
-----------------
x = 154
I hope this helps!
determine the amount of cash collected at the time of making a cash sale of $9,220 worth of merchandise subject to 13 % HST
Answers
The total amount of cash collected is $10,418.6.
What is a percentage?A percentage is expressed as a number or ratio that can be expressed as fraction of 100. It is denoted by % symbol.
The amount of cash collected at the time of making a cash sale of $9,220 worth of merchandise subject to 13 % HST is,
Rate of interest on the sales amount is 13%
13% of 9220 = \(\frac{13}{100}*9220=1198.6\)
Here, sales price = $9,220
The total amount of cash collected = 1198.6+9220
= 10,418.6
Hence, the total amount of cash collected is $10,418.6.
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