Will make BRAINLIEST

In the given examples, the kind of statistics that are used can be described as follows:1. A school psychologist finds that students who listen to music have decreased scores on their homework - Inferential statistics are used here.2. A teacher reports the average score for a class - Descriptive statistics are used here.

For identifying the dependent and independent variable, the following description can be given:

Dependent variable: This is the variable that is being tested and measured. In the given example, the dependent variable is the score on the homework.

Independent variable: This is the variable that is being manipulated. In the given example, the independent variable is the music that the students listen to.

To know more about statistics:

https://brainly.com/question/32237714

#SPJ11

Answer:

wheres the graph

Step-by-step explanation:

Correct option for this is D, Anna will spend $5 to buy 2 pounds of beef

From statement A, we know that Anna can buy 5 pounds of chicken when she buys 2 pounds of beef.

We can use this information to find the slope of the line that represents Anna’s equation.

slope = (change in y) / (change in x) = (5 - 0) / (2 - 0) = 5/2

So the equation is y = (5/2)x + b, where b is the y-intercept.

From statement B, we know that Anna will spend $2 to buy 5 pounds of chicken. We can use this information to find the y-intercept.

y = (5/2)x + b 5

= (5/2)(2) + b

b = 5 - 5/2

b = 5/2

So the equation is y = (5/2)x + 5/2.

Now we can use this equation to answer statement C. If Anna buys 5 pounds of beef, then x = 5 and we can solve for y.

y = (5/2)(5) + 5/2 y = 25/2 + 5/2 y = 15

So Anna can buy 15 pounds of chicken when she buys 5 pounds of beef. Therefore, statement C is false.

Finally, we can use this equation to answer statement D. If Anna spends $30 in total and spends $5 to buy 2 pounds of beef, then she has $25 left to spend on chicken.

25 = (5/2)x x = 10

So Anna can buy 10 pounds of beef when she spends $5. Therefore, statement D is true.

Therefore, the correct answer is D.

What is pound ?

any of the several mass and weight units. especially: a measurement unit equivalent to 16 ounces (or 0.454 kilograms), which is commonly used among English-speaking peoples, see measure. the fundamental unit of currency in the United Kingdom. commonly known as the pound sterling.

to know more about Pounds visit:

brainly.com/question/29181271

#SPJ1

Answer:

76 rows

Step-by-step explanation:

    \(\text{Number of rows = $\sqrt{5776}$}\)

                               = 76

Answer:

x=106/157

Step-by-step explanation:

Answer:

x=10/13

Step-by-step explanation:

Answer:

X=-2.5

Step-by-step explanation:

You take -7.5 and distribute to the x and 3 so that would be -7.5x-22.5=3.75 then you take -22.5 and do inverse operation and do 22.5 on both sides which then you will have -7.5x=-18.75 then you divide both side by -7.5 and get -2.5

Answer:

4/8 is one half

Step-by-step explanation:

We can be 99% confident that the true average price of a regular room with a king size bed falls within this interval.

The interval estimate to estimate the true average price of a regular room with a king size bed in the resort community with 99% confidence can be constructed using the sample mean, sample standard deviation, and the critical value for a 99% confidence level.

Given that the sample mean is $125 and the sample standard deviation is $30, we can calculate the margin of error using the formula:

Margin of Error = (Critical Value) * (Standard Deviation / √Sample Size)

Since we have a sample size of 18 and we want a 99% confidence level, the critical value can be obtained from the Z-table or using statistical software, and for a 99% confidence level, it is approximately 2.878. Plugging in the values, we get:

Margin of Error = 2.878 * (30 / √18) ≈ 18.71

The interval estimate is then constructed by adding and subtracting the margin of error from the sample mean:

Interval Estimate = Sample Mean ± Margin of Error

Interval Estimate = $125 ± $18.71

Rounded to two decimal places, the interval estimate for the true average price of a regular room with a king size bed in the resort community with 99% confidence is approximately $106.29 to $143.71.

# A travel agent is interested in the average price of a hotel room during the summer in a resort community. The agent randomly selects 18 hotels from the community and determines the price of a regular room with a king size bed. The average price of the room for the sample was $125 with a standard deviation of $30. Assume the prices are normally distributed. Construct an interval to estimate the true average price of a regular room with a king size bed in the resort community with 99% confidence. Round the endpoints to two decimal places, if necessary.

Learn more about standard deviation here:
brainly.com/question/13498201

#SPJ11

Answer:

70 mph

Step-by-step explanation:

175 divided by 2.5 equals 70 so it would be 70 mph

The probability that the Davis boys will occupy the first two seats in the row, the Jones boys will occupy the next three seats, and the Smith boys will occupy the last four seats is 7.937×\(10^{-4}\).

There are \(\left[\begin{array}{ccc}9\\2,3,4\\\end{array}\right]\) potential arrangements for the nine boys if we do not make a distinction amongst boys with the same last name. We are curious in the likelihood of a specific one of these configurations.

Probability = \(\frac{1}{\left[\begin{array}{ccc}9\\2,3,4\\\end{array}\right]}\)

                  = \(\frac{2!3!4!}{9!}\)

                 = 0.0007937

                = 7.937×\(10^{-4}\)

Hence, the probability is 7.937×\(10^{-4}\).

To learn more about probability here:

https://brainly.com/question/11234923

#SPJ4

The number of students with heights less than 163 cm should be expected is 12.

According to the statement

The mean of height is 175 cm

and  the standard deviation of height is 6 cm.

We use normal distribution here with formula

Z= X - μ /σ

Here X is 167.5 and μ is 175 and σ is 6 cm.

Substitute the values in it then

Z = 167.5 - 175 / 6

Z = -1.25

-1.25 have a p value 0.012

Out of 1000 students:

0.012 x 1000 = 12.

So, The number of students with heights less than 163 cm should be expected is 12.

Learn more about DISTRIBUTION here https://brainly.com/question/1094036

#SPJ4

The domain of the function is defined as 0 ≤  x ≤ 4.

option A is the correct answer.

A domain of a function refers to "all the values" that can go into a function without resulting in undefined values.

So the domain of a function is the set of x values, while the range of a function is the set of y values.

From the given statement, the range of the function is defined as;

y = vt

where;

y = 60 mph x 4 hr

y = 240 miles

From the given statement, the domain of the function is defined as;

0 ≤  x ≤ 4

Learn more about domain of function here: https://brainly.com/question/28934802

#SPJ1

Answer:

x=85 y=45

Step-by-step explanation:

x=180-95

y=180-(50+85)

y=180-135

y=45

Answer:

A. \(Log_p N = b \ and \ b^p = N\)

Step-by-step explanation:

A. The given options are;

\(Log_p N = b \ and \ b^p = N\)

For \(Log_p N = b\) we have;

\(p^b = N\)

However;

\(b^p = N\)

Where, p ≠ b

\(p^b \neq b^p\)

Therefore;

N ≠ N for the given pair and the pair are therefore, not equivalent

B. x = √y and \(x = y^{1/2}\)

We note that

x = √y = \(y^{1/2}\)

We have;

x = \(y^{1/2}\), by transitive property

Therefore, the pair, x = √y and \(x = y^{1/2}\) are equivalent

C. \(Log_b N = p \ and \ b^p = N\)

From \(Log_b N = p\), we have;

\(b^p = N\)

Therefore, \(Log_b N = p \ and \ b^p = N\) are equivalent pairs as \(b^p = N\) can be obtained from \(Log_b N = p\)

D. ㏑x = y and x = \(e^y\)

\(ln \ x = ln_e \ x = y\), therefore, by rules of logarithm, we have;

x = \(e^y\)

Therefore, ㏑x = y and x = \(e^y\) are equivalent pairs, as x = \(e^y\) can be obtained from ln x.

Therefore;

The option which are not equivalent pair is option is \(Log_p N = b \ and \ b^p = N\)

The addition of the polynomials 14x² - 8x + 3 and - 6x² + 7x - 11 is 8x² - x - 8

(14x^2 - 8x + 3) + (-6x^2 + 7x - 11)

= 14x² - 8x + 3 - 6x² + 7x - 11

= 14x² - 6x² - 8x + 7x + 3 - 11

= 8x² - x - 8

Therefore, the addition of the polynomials 14x² - 8x + 3 and - 6x² + 7x - 11 is 8x² - x - 8

Learn more about polynomial:

https://brainly.com/question/4142886

#SPJ1

Answer:

3x + y

Step-by-step explanation:

combine like terms

-3x + 6x = 3x

2y - y = y

Final Answer: 3x + y

Using the law of cosines, it is found that the length of side AB is of AB = 13.

The law of cosines states that we can find the angle C of a triangle as follows:

\(c^2 = a^2 + b^2 - 2ab\cos{C}\)

in which:

For this problem, the parameters are:

C = 120, a = 8, b = 7.

Hence:

\(c^2 = a^2 + b^2 - 2ab\cos{C}\)

\(c^2 = 8^2 + 7^2 - 2(8)(7)\cos{120^\circ}\)

\(c^2 = 169\)

\(c = \sqrt{169}\)

c = 13.

Hence AB = 13.

More can be learned about the law of cosines at https://brainly.com/question/2491835

#SPJ1

Answer:

3, 130 degrees

Step-by-step explanation:

Angles TUW and VUW are congruent, so their opposite sides will be congruent as well

GF and IF are congruent, so their opposite angles will be congruent as well. 65 + 65 is 130 degrees.

Answer:

3 grape popsicles

Step-by-step explanation:

Let us represent

Orange popsicles = x

Grape popsicles = y

There are 5 times as many orange popsicles as grape popsicles in Reid's freezer.

x = 5y ..... Equation 1

There are 12 more orange popsicles than grape popsicles.

x = y + 12..... Equation 2

Hence, we substitute 5y for x in Equation 2

5y = y + 12

5y - y = 12

4y = 12

y = 12/4

y = 3

Note that, Grape popsicles = y

y = 3 grape popsicles.

Therefore, the number of grape popsicles that are there in Reid's freezer is 3 grape popsicles

Answer:

17b popsicles

Step-by-step explanation:

z >1 for the given inequality for x.

To solve the following inequality for x.

-26 + 13z + 2 > 2 132

Since there is no x in this I'm assuming we are looking for z

Step 1: Simplify both sides

15r - 26 > -13z + 2

Step 2: Add 13z to both sides

15r - 26 + 13z > -13z + 2 + 13z

28 - 26 > 2

Step 3: Add 26 on both sides

28 - 26 + 26 > 2 + 26

28z > 28

Step 4: Divide both sides by 28z / 28 > 28 / 28

z > 1

Hence the answer is z >1 for the given inequality for x.

To learn more about inequality click here https://brainly.com/question/24372553

#SPJ9

The 4 tests for similar triangles are:-

AAA: Three pairs of equal angles.

SSS: Three pairs of sides in the same ratio.

SAS: Two pairs of sides in the same ratio and an equal included angle.

ASA: Two angles and the side included between the angles of one triangle are equal

What is AAA,SAS,ASA,SSS?

According to the SSS rule, two triangles are said to be congruent if all three sides of one triangle are equal to the corresponding three sides of the second triangle. 

According to the SAS rule, two triangles are said to be congruent if any two sides and any angle between the sides of one triangle are equal to the corresponding two sides and angle between the sides of the second triangle.

According to the ASA rule, two triangles are said to be congruent if any two angles and the side included between the angles of one triangle are equal to the corresponding two angles and side included between the angles of the second triangle.

According to the  AAA rule, "if in two triangles, corresponding angles are equal, then their corresponding sides are in the same ratio (or proportion), and hence the two triangles are identical."

Learn more about SAS ,ASA ,AAS, SSS from the link below

https://brainly.com/question/29617415

#SPJ4

A correlation coefficient, r can never be less than -1 or greater than 1. Thus, d. 1.032 is not possible as a correlation coefficient.

The correlation coefficient, r is a measure of the direction and strength of the linear relationship between two variables. The correlation coefficient (r) varies between -1 and 1, with -1 indicating a perfect negative correlation, 0 indicating no correlation, and 1 indicating a perfect positive correlation. A value greater than 1 or less than -1 is not possible. Therefore, the value that could not represent a correlation coefficient is d. 1.032.

Given, the correlation coefficient varies between -1 and 1. The value that could not represent a correlation coefficient is 1.032 since it is greater than 1. A correlation coefficient, r of -1 indicates a perfect negative correlation where one variable decreases as the other increases. A correlation coefficient, r of 1 indicates a perfect positive correlation where both variables move in the same direction. A correlation coefficient of 0 indicates no linear relationship between the two variables.  A correlation coefficient, r can never be less than -1 or greater than 1.

Thus, d. 1.032 is not possible as a correlation coefficient.

Learn more about correlation coefficient visit:

brainly.com/question/29978658

#SPJ11

Answer:

  x ≈ 29.076 ≈ 29.1

Step-by-step explanation:

Given BA=22.2, AD=11.3, DC=14.8, and BC =x in triangle ABC with angle bisector BD, you want to find the value of x.

The angle bisector divides the sides proportionally. This means ...

  BC/BA = CD/AD

  x/22.2 = 14.8/11.3 . . . . substitute given values

  x = 22.2(148/113) ≈ 29.076 ≈ 29.1

The value of x is about 29.1.

__

Additional comment

We have rounded x to 1 dp to match the other dimensions in the figure. Its exact value is 29 43/565.

The triangle formed by cities A, B, and C is an obtuse triangle.

To determine the type of triangle formed, we can analyze the lengths of the sides. According to the given information, the distance between city A and city B is 22 miles, between city B and city C is 54 miles, and between city A and city C is 51 miles.

Using the triangle inequality theorem, we find that the sum of the lengths of any two sides of a triangle must be greater than the length of the remaining side. However, in this case, 22 + 54 = 76, which is less than 51. Therefore, the triangle violates the triangle inequality, indicating that it is an obtuse triangle.

An obtuse triangle is a triangle where one of the angles measures greater than 90 degrees. In this scenario, the angle formed at city C is the obtuse angle.

To learn more about triangle click here: brainly.com/question/2773823

#SPJ11

A concave hexagon with 2 pairs of congruent sides is a shape that has six sides and two pairs of sides that are of equal length, but the shape curves inward at one or more angles, creating a concave indentation.

A hexagon is a six-sided polygon, and when two pairs of its sides are congruent,

it means that four of its sides have the same length, if the shape curves inward at one or more angles,

it creates a concave hexagon, which means that the indentation on the shape is facing inward, rather than outward, a concave hexagon with 2 pairs of congruent sides is a six-sided polygon with four sides of equal length, but with a curvature that creates an inward indentation.

Hence, a concave hexagon with 2 pairs of congruent sides is a six-sided figure with an indentation and two sets of sides with equal lengths.

learn more about hexagon click here:

https://brainly.com/question/15424654

#SPJ11

Answer:

To compare Arthur's long jump to the record, we need to convert both measurements to the same unit. Let's convert both measurements to inches:

Record: 22 ft 6 3/4 in = (22 x 12) + 6 + 3/4 = 270 + 6 + 0.75 = 276.75 in

Arthur's jump: 22 ft 5 1/2 in = (22 x 12) + 5 + 1/2 = 270 + 5 + 0.5 = 275.5 in

To determine how much farther Arthur needs to jump to break the record, we subtract Arthur's jump distance from the record distance:

Record distance - Arthur's jump distance = 276.75 in - 275.5 in = 1.25 in

However, we are told that long jumps are measured to the nearest quarter inch. Therefore, we need to round the difference to the nearest quarter inch. Since 1.25 inches is closer to 1.25 than it is to 1.5, we round down to the nearest quarter inch. This gives us:

1.25 in ≈ 1.25/4 = 0.3125 quarters ≈ 0.25 quarters

Therefore, Arthur needs to jump an additional 0.25 quarters (or 1/16 of an inch) to break the record.

The permutations of four objects m, I, n, and k taken two at a time without repetition are: mn, mk, mi, nm, nk, ni, km, kn, ki, in, im, ik.

P is the total number of permutations, which is equal to 12.

The correct answer is OB, which lists all 12 permutations.

P2 is the number of permutations taken two at a time with repetition allowed. This means that we can repeat the same object in a permutation.

There are 16 possible permutations with repetition allowed: mm, ml, mn, mk, ll, ln, lk, nn, nk, kk, ii, ik, nn, ni, nk.

Therefore, P2 is equal to 16.

Learn more about permutations here:

https://brainly.com/question/30649574

#SPJ11

The ratio of yellow to all skittles is

Answer:

3/2

Step-by-step explanation: