please explain your answers - thank you!
We want to predict y=salaries for people with the same job title based on x1=months at job and x2-gender (coded as males=0, females-1) using the model: y=x+B₁x₁ + B₂x2 + B3X1X2 + ε Identify the

The margin of error for the 92.5% confidence interval to measure the population estimate is 0.0349 .

We have the following confidence interval of proportions in a sample of n people who were polled, with a success probability of and a confidence level of.

In which n = 515

z is the z-score that has a p-value of 1 - 92.5 = 7.5

The margin of error is of:

80 of the 515 participants in a clinical trial exhibited improvement after the treatment.

This means that

92.5% confidence level

So , z is the value of Z that has a p-value of , so .

Margin of error:

\(Z_{\frac{\alpha}{2}}\cdot \sqrt{\frac{p(1-p)}{n} }\) = 0.0349

The margin of error for the 92.5% confidence interval used to estimate the population proportion is of 0.0349 .

In statistics, a confidence interval describes the likelihood that a population parameter would fall between a set of values for a given percentage of the time. Confidence ranges that include 95% or 99% of anticipated observations are frequently used by analysts.

To learn more about confidence interval visit:

https://brainly.com/question/24308825

#SPJ4

Answer:

n=2

Step-by-step explanation:

4n-2n=2n

2n/2=4/2

n=2

Hope this helps/ Happy Holidays!

Answer:

answer: y= 1^2+ -8 I think I did this right.

Answer:

y=-1/2x-8

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

The slope intercept form for this problem is y = x - 16

The shape of Banana is taking the shape of a parabola.

a plane curve created when a point moves so that the distance between it and a fixed point or line is equal.

y2=4ax, where is the distance from the parabola's vertex to focus, is the standard equation for a normal parabola.

Several examples of parabolas in real life

The wheel stance in yoga resembles a parabola.

Banana's shape is beginning to resemble a parabola.

A parabola is emerging from the Rainbow.

Antennas with a parabolic dish are resembling a parabola.

Mirror's concave surface.

Any point on a parabola is at an equal distance from both the focus, a fixed point, and the directrix, a fixed straight line. A parabola is a U-shaped plane curve. The topic of conic sections includes parabola, and all of its principles are discussed here.

To learn more about parabola refers to:

brainly.com/question/64712

#SPJ4

(1,2,4)

Range describes the y-values of a graph.

Range

Range is the y-values that a graph covers. Remember that the y-values are found on the vertical axis. If the graph is not continuous, then the values between the points are not included in the range. Similar to the range, the domain of a graph is the x-values that a graph covers. If there is a coordinate point with a y-value, then that y-value should be included in the range.

Finding Range

In order to find the range, we need to find all the unique y-values of the graph. Additionally, the range is given in numerical order. This means starting from the least value and going up to the greatest. The lowest y-value is 1, then 2, and finally 4. Even though there are two points where y = 2, we are only looking for unique values. This means that the range is (1,2,4).

Answer:

25

Step-by-step explanation:

Answer:

Step-by-step explanation:

a. 66.8 58.2 83.3 83.3 44.2 83.3 76.4 54.3 65.2 62.9

Range = highest value - lowest

= 83.3 - 44.2 = 39.1.

b. Mean m = 677.9 / 10

= 67.8

Differences from the mean

= 66.8 - 67.8 = -1.0

-9.6

15.5

-23.6

15.5

15.5

8.6

-13.5

-2.6

-4.9

Now we sqare the above vales:

= 1 , 92.16, 240.25, 240.25, 240.25, 556.96, 73.96, 182.25, 6.76, 24.01

Now the sm of these is 1657.85

Now we divide this by 10 and find the sqare root

= √(165.785)

= 12.86.

Standrad deviation is 12.86.

Answer:

-x^3 + 3x^2 - 6x + 8

Step-by-step explanation:

To solve this, first distribute the negative to everything inside the 2nd set of ( ). Here's what your problem will look like after distributing:

x^3 - 2x + 5 - 2x^3 + 3x^2 - 4x + 3

Now all you need to do is combine like terms. Here's a list of the terms you can combine:

x^3 and -2x^3

-2x and -4x

5 and 3

Here's what your equation will look like after combining all like terms:

-x^3 + 3x^2 - 6x + 8

This is your final answer.

Answer:

Any linear equation with a slope of 1.5

(examples:

Step-by-step explanation:

If two equations are parallel, their slopes are the same.

y=1.5x-6 is written in slope-intercept form, which is:

\(y=mx+b\)

Where m is the slope, and b is the y-coordinate of the y-intercept.

Thus, looking at the equation y=1.5x-6, we can find that m=1.5.

This means that the slope is 1.5.

Think of any equation in this format that uses 1.5 as the slope. Here are a few examples:

The graphs of all of these equations are parallel to the graph of y=1.5x-6 because their slopes are the same.

You can write your own equation using a slope of 1.5.

So the maximum number of edges in an undirected graph with 100 vertices is 4950.

In an undirected graph, each edge connects two vertices, and as such, it is counted twice, once for each vertex it connects. Therefore, the total number of edges in the graph is the sum of the degrees of all vertices, divided by 2.

In a complete graph with n vertices, every vertex is connected to every other vertex, except itself, and so the degree of each vertex is n-1 (it is connected to n-1 other vertices). Therefore, the total number of edges in the graph is:

n * (n-1) / 2

Substituting n = 100, we get:

100 * 99 / 2 = 4950

To know more about graph,

https://brainly.com/question/29467965

#SPJ11

Answer:

Credit to the guy that has already answer. HE IS CORRECT!! THE ANSWER IS D=7/9 AND 6!!!!!!!!!!!!!!!

Step-by-step explanation:

click on the link below it shows a screenshot of the correct answer!!

Stay Safe Guys!!!!

The value of x is 5/3.

A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator.

We have equation in fraction are:

\(\frac{3x-2}{3x+1} = \frac{1}{2}\)

To solve the value of x

In the above equation, Solve by cross multiplication:

2(3x - 2) = 3x + 1

Open the bracket and multiply by 2 :

6x - 4 = 3x +1

Combine the like terms:

6x - 3x = 1 + 4

Add and subtract the terms:

3x = 5

x = 5/3

Learn more about Fraction at:

https://brainly.com/question/10354322

#SPJ1

Answer:

B = 8 S / 9          8 out of 9 students are boys

4 / 5 B = L         4 out of 5 boys brought their lunch

B = 5 L / 4

5 L / 4 = 8 S / 9            from first equation

L = 32/45 * S         32 boys out 45 students brought their lunch

Answer:

$2 each

Step-by-step explanation:

If x is the price of 1 pencil, the equation is 22-5x=12

-5x=12-22

-5x=-10

5x=10

x=2

Each pencil was $2

Hope it helps :)

Brainliest? :o

Answer:

sin x° = Opposite / Hypotenuse

x = 3.38

Step-by-step explanation:

sin 70° = x / 3.6

sin 70° × 3.6 = x

x = 0.93969262079 × 3.6

x = 3.38289343483 ~ 3.38

The total cost of materials and labor for the office space, considering a tile unit cost of P300 and labor cost equal to the materials cost, amounts to P63,000.

To calculate the total cost of materials and labor, we first need to determine the cost of the tiles. Given that the unit cost of a certain tile is P300, we can multiply this by the area of the office space to find the total cost of the tiles. The office space has an area of 63 sqm, so the total cost of the tiles is P300 * 63 = P18,900.

Next, we need to calculate the labor cost, which is 100% of the materials cost. Since the materials cost is P18,900, the labor cost will be equal to P18,900. Therefore, the total cost of labor is also P18,900.

To find the total cost of materials and labor, we add the cost of the tiles (P18,900) and the labor cost (P18,900): P18,900 + P18,900 = P37,800.

Therefore, the total cost of materials and labor for the office space is P37,800.

To learn more about area click here: brainly.com/question/16151549

#SPJ11

Answer: (4, −20), (-1, -1) and (2, 0)

For the exponential equation, having variable x as superscript equation has solution as,

\(x=-5,2\)

According to the equality for exponential equation property, when the bases of both side of a equation is same, then the exponents of both the terms must be equal.

The equation given in the problem is,

\(12^{x^2+5x-4}=12^{2x+6}\)

In the given equation, the base of both side is equal. For the equal base, the exponents of them can be equate as,

\({x^2+5x-4}={2x+6}\)

Arrange all the terms one side of the equation as,

\({x^2+5x-4}-{2x-6}=0\)

Solve it further as,

\({x^2+3x-10}=0\)

To solve the above quadratic equation, use the split the middle term method as,

\({x^2-2x+5x-10}=0\\x(x-2)+5(x-2)=0\\(x-2)(x+5)=0\)

Equating both the factor to the zero, we get the value of the x as -5 and 2.

For the exponential equation, having variable x as superscript equation has solution as,

\(x=-5,2\)

Learn more about the equality for exponential equation property here;

https://brainly.com/question/11832081

Removing the electric car from the data set will reduce the standard deviation as the extreme value of 112 mpg is taken out, resulting in a decrease in the spread of the data. The interquartile range (IQR) will also be affected as the extreme outlier is taken out, will decrease the spread of the data in the boxplot.

The electric car with a rating equivalent to 112 miles per gallon is an extreme outlier, which means it is very far from the rest of the data. Therefore, removing this outlier from the data set will decrease the variability and, consequently, decrease the standard deviation. The extreme outlier with the rating equivalent to 112 miles per gallon is outside of the whiskers of the boxplot, which means it is beyond the range of the middle 50% of the data. Therefore, removing this outlier from the data set will decrease the spread of the data in the boxplot and, consequently, decrease the IQR.

To know more about standard deviation:

https://brainly.com/question/23907081

#SPJ4

Answer:

7/2 (7 over 2)

Answer:

The linear equation is y = 450 - 30 x, where y is the number of pages

Lourdes has left to read after x days

Step-by-step explanation:

Each day, Lourdes reads 30 pages of a 450-page book

- We need to write a linear equation to represent the number of pages

 Lourdes has left to read after x days

∵ Lourdes reads 30 pages each day

∵ Lourdes will read for x days

∴ The number of pages Lourdes will read in x day = 30 x

- The left pages will be the difference between the total pages of the

 book and the pages Lourdes read

∵ The book has 450 pages

∵ Loured will read 30 x in x days

∴ The number of pages left = 450 - 30 x

- Assume that y represents the number of pages Lourdes has left

 to read after x days

∴ y = 450 - 30 x

The linear equation is y = 450 - 30 x, where y is the number of

pages Lourdes has left to read after x days

The amount of water that flows from the tank during the first 40 minutes is 10,000 liters.

During the first 40 minutes, the rate of water flowing from the tank can be determined by substituting t = 40 into the given equation r(t) = 400 − 8t. This gives us r(40) = 400 − 8(40) = 400 − 320 = 80 liters per minute. To find the total amount of water that flows from the tank during this time period, we need to calculate the integral of r(t) from t = 0 to t = 40.

∫(400 − 8t) dt from 0 to 40 equals ∫(400 − 8t) dt = 400t - 4t^2 evaluated from 0 to 40, which simplifies to (400 * 40 - 4 * 40^2) - (400 * 0 - 4 * 0^2) = 16,000 - 0 = 16,000 liters.

Therefore, the amount of water that flows from the tank during the first 40 minutes is 16,000 liters.

The given equation represents the rate at which water flows from the bottom of the storage tank. By integrating this equation over a specific time interval, we can determine the total amount of water that has flowed during that period. Integration involves finding the antiderivative of the function and evaluating it at the upper and lower limits of the interval.

Learn more about Water

brainly.com/question/28465561

#SPJ11

the partial regression coefficients in a multiple regression model represent the expected change in the dependent variable associated with a unit change in the corresponding independent variable, holding other variables constant.

In the context of the three-variable model Yt = α1 + α2x2+ a3x3 where α2 and α3 are partial regression coefficients, the coefficients represent the changes in Y associated with a unit change in x2 and x3, respectively. The partial regression coefficient represents the expected change in Y when x2 or x3 increases by one unit, while keeping other variables constant.
The partial regression coefficient for α2, α2, measures the effect of the variable x2 on Y. It tells us how much Y is expected to change for every unit increase in x2, holding the other variables constant. Similarly, the partial regression coefficient for α3, α3, measures the effect of the variable x3 on Y, and tells us how much Y is expected to change for every unit increase in x3, holding the other variables constant.
It is important to note that the regression coefficients are estimates obtained from sample data, and are subject to sampling variability. Therefore, it is important to consider the uncertainty associated with the estimates when interpreting the results.
To know more about coefficients visit:

https://brainly.com/question/1594145

#SPJ11

True, the Greek letter used to represent the probability of a Type I error is alpha ().

The Greek letter alpha (α) is indeed used in statistics, but it represents the level of significance chosen for a statistical test. The level of significance is the probability of rejecting the null hypothesis when it is actually true. The probability of making a Type I error (rejecting the null hypothesis when it is true) is equal to the level of significance (α) chosen for the test.

Therefore, alpha is not used to represent the probability of a Type I error directly, but it is related to it. The probability of a Type I error depends on the chosen level of significance and the specific hypothesis test being conducted.

To know more about probability visit:-

https://brainly.com/question/30034780

#SPJ11

True. The Greek letter used to represent the probability of a Type I error is alpha

This is a statement and not a question. However, if you are asking whether the statement "the Greek letter used to represent the probability of a type i error is alpha (α)" is true or false, the answer is that it is partially true. While the Greek letter α is commonly used to represent the significance level (or the probability of a Type I error) in hypothesis testing, it is not the only letter that can be used.

Other letters such as β and γ may also be used in certain contexts. So the complete answer would be a long answer that explains the partial truth of the statement.

To know more about probability visit:-

https://brainly.com/question/32004014

#SPJ11

Answer:

$28

Step-by-step explanation:

\(22 + x - 12 = 38\)

\(x + 1 0 = 38\)

\(x = 28\)

Answer:

4x

Step-by-step explanation:

5x - x is simply

5x - 1x = 4x

Another way to think about it:

5x = 5 * x

5(x) - 1(x) = 4(x) = 4x

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

4x

Step-by-step explanation:

The numbers that cannot be probabilities are: square root of 2, -53, 5/3, and 1.31.

Probability is a measure of the likelihood of a particular event occurring in a random experiment. It is a value between 0 and 1, with 0 indicating that an event is impossible, and 1 indicating that an event is certain to occur.

In statistics, probability is used to make predictions or draw inferences about a population based on a sample of data. For example, if we were to flip a coin, the probability of getting heads is 0.5, or 50%. In general probability can be defined as the ratio of the number of favorable outcomes to the total number of possible outcomes, which is the mathematical framework behind the random experiments.

From the set of numbers, 0, 0.08, and 3/5 are all possible values of probability.

Therefore, square root of 2, -53, 5/3, and 1.31 cannot be probabilities.

Learn more about probability here: https://brainly.com/question/24756209

#SPJ4

We are given a function y = -4x^3 - 9x^11, and we need to find its first and second derivatives.

To find the first derivative, we apply the power rule and the constant multiple rule. The power rule states that the derivative of x^n is nx^(n-1), and the constant multiple rule states that the derivative of kf(x) is k*f'(x), where k is a constant. Applying these rules, we can find the first derivative of y = -4x^3 - 9x^11.

Taking the derivative term by term, the first derivative of -4x^3 is -43x^(3-1) = -12x^2, and the first derivative of -9x^11 is -911x^(11-1) = -99x^10. So, the first derivative of y is dy/dx = -12x^2 - 99x^10.

To find the second derivative, we apply the same rules to the first derivative. Taking the derivative of -12x^2, we get -122x^(2-1) = -24x, and the derivative of -99x^10 is -9910x^(10-1) = -990x^9. Therefore, the second derivative of y is d^2y/dx^2 = -24x - 990x^9.

To know more about derivatives click here: brainly.com/question/25324584

#SPJ11

Fallis has 2000 square centimeters (cm²) tiles, she does not have enough tiles to cover the entire counter.

To find out if Ms. Fallis has enough tiles to cover the counter, we need to calculate how many tiles are required to cover an area of 2 square meters.

Since the tiles have a side length of 3 centimeters, we need to convert the area of the counter to square centimeters.

1 square meter = 10000 square centimeters (cm²)

So, 2 square meters = 20000 square centimeters (cm²)

Now, we need to calculate the area of each tile:

Side length of each tile = 3 centimeters (cm)

Area of each tile = \((side length)^2\) = \((3 cm)^2\) = 9 square centimeters (cm²)

To cover the counter, we need to divide the total area of the counter by the area of each tile:

Number of tiles required = (Total area of counter) / (Area of each tile)

= 20000 cm² / 9 cm²

= 2222.22

Since we cannot have a fraction of a tile, we need to round up to the nearest whole number of tiles. So, Ms. Fallis needs at least 2223 tiles to cover the counter.

Since she has 2000 square centimeters (cm²) tiles, she does not have enough tiles to cover the entire counter.

For such more questions on square metre

https://brainly.com/question/30559154

#SPJ11