MATHEMATICS HIGH SCHOOL

A recent survey of 8,000 high school students found that the mean price of a prom dress was $195.00 with a standard deviation of $12.00. Alyssa thinks that her school is more fashion conscious and spent more than $195.00. She collected data from 20 people in her high school and found that the average price spent on a prom dress was $208.00. Which of the following is the correct z-statistic for this situation?

Answers

Answer 1
Answer:

To calculate the z-statistic, we must first calculate the standard error.

Standard error is standard deviation divided by the square root of the population. In this case, it is equal to 2.68.

The z-score is defined the distance from the sample to the population mean in units of standard error.

z = (195 – 208)/2.68 = -4.86
Answer 2
Answer:

Answer:

The answer is B

Step-by-step explanation:

edge 2020

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Eight times the difference of a number and seventeen is thirty"?
PLEASE HELPPPPPPP!!!!!! For accounting purposes, the value of assets (land, buildings, equipment) in a business are depreciated at a set rate per year. The value, V(t) of $408,000 worth of assets after t years, that depreciate at 18% per year, is given by the formula V(t) = Vo(b)t. What is the value of Vo and b, and when rounded to the nearest cent, what are the assets valued at after 8 years?

5 1/5 - 1 3/4 what’s the answer

Answers

Answer: 69/20

Step-by-step explanation:

5 1/5 = 26/5

1 3/4 = 7/4

26/5 - 7/4

= 104/20 - 35/20

= 69/20

Find the quotient (35n 3 - 30n 2 + 25n) ÷ (-5n)

Answers

(35n^3 - 30n^2 + 25n) ÷ (-5n)
= -5n(-7n^2 + 6n - 5) ÷ (-5n)
= -7n^2 + 6n - 5

Answer: -7n^2+6n-5


Step-by-step explanation:

Can anyone help pleas

Answers

Answer:

x = -1 and x = -3

Step-by-step explanation:

GIven the graph of the function y = f(x), where the problem asks for the value of x when f(x) = -6:

Looking at the graph where the value of the y-coordinate is -6, it shows that it has two corresponding x-ccordinates: x = -1, and x = -3  Therefore, the value of x when f(x) = -6 is x = -1 and x = -3.

Please mark my answer as the Brainliest, if you find this helpful :)
Hello! The answer is -1. Hope this helps

in a triangle, the measure of the first angle is twice the measure of the second angle. the measure of the third angle is 92 degrees more than the measure of the second angle. what is the measure of the first angle?

Answers

You need an equation. x is the unknown angle or the second angle. Keep in mind that interior angles of a triangle add up to 180.

First Angle: 2x
Second Angle: x
Third Angle: x+92

2x + x + x + 92 = 180
4x + 92 = 180
     -92      -92
4x = 88
/4      /4
x = 22

First Angle: 2x = 2(22) = 44
Second Angle: x = 22
Third Angle: x+92

The answer is 44 degrees.

Ellie, the elephant eats 4 times as much as popcorn the pony, zac the zebra eats twice as much as popcorn altogether they eat 238 kilograms of food per week how much foos does each of them require per week

Answers

Answer=Elephant:34kg  Pony:136kg  Zebra:68kg

elephant:pony:zebra
1:4:2
1+4+2=7
238/7=34
1*34=34kilograms (elephant)
4*34=136kilograms (pony)
2*34=68kilograms (zebra)

Elephant=34kg
Pony=136kg
Zebra=68kg

Someone help please someone who is good at geometry!!!!!

Answers

Answer:

22

Step-by-step explanation:

5x-22 and 88 are the same angle so 5x-22=88.

You simply solve from there.

5x=88+22

5x=110

x=110÷5

x=22
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