Mathematics Middle School

a sample of 500 schools in a state results in an average number of students per grade level of 178.6 students, with a margin of error of 45.2 if there are 3250 high schools in the state, what is the estimated number of students per grade level?​

Answers

Answer 1
To estimate the number of students per grade level in the state, we can use the sample average and the margin of error to construct a confidence interval.

The margin of error is given as 45.2, which means that we can be 95% confident that the true population average number of students per grade level falls within the range of the sample average plus or minus the margin of error.

So, the confidence interval is:

178.6 ± 45.2

To estimate the population average number of students per grade level, we can take the midpoint of the confidence interval:

(178.6 + (178.6 - 45.2)) / 2 = 311.6

Therefore, the estimated number of students per grade level in the state is 311.6

Related Questions

(Translations LC)

Use the graph to answer the question.

Graph of polygon ABCD with vertices at 1 comma negative 1, 3 comma negative 5, 7 comma negative 5, 5 comma negative 1. A second polygon A prime B prime C prime D prime with vertices at 1 comma negative 6, 3 comma negative 10, 7 comma negative 10, 5 comma negative 6.

Determine the translation used to create the image.

5 units down
5 units up
1 unit down
1 unit up

Answers

The translation used to create the image include the following: A. 5 units down.

What is a translation?

In Mathematics and Geometry, the translation of a geometric figure or graph to the left simply means subtracting a digit from the value on the x-coordinate of the pre-image;

g(x) = f(x + N)

Conversely, the translation a geometric figure downward simply means subtracting a digit from the value on the positive y-coordinate (y-axis) of the pre-image; g(x) = f(x) - N.

Based on the information provided, we have:

(x, y)                               →                  (x + h, y + k)

(1, -1)                              →                   (1, -6).

1 + h = 1

h = 1 - 1

h = 0

-1 + k = -6

k = -6 + 1

k = -5.

Read more on function and translation here: brainly.com/question/31559256

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please help me and thank you

Answers

Yes, all rectangles are parallelograms

he number line shows the solution set of which inequality?
A horizontal number line is labeled from 51 to 52. There is a closed circle at 51.52, and the number line is shaded to the right of 51.52.

A. j/4.6 > 11.2
B. j/1.5 > 16.3
C. j/12.7 > 19.6
D. j/1.4 > 1.1

Answers

Answer: B hope is correct

Marvin was in charge of ordering sodas for the class fundraiser. He made a circle graph to show the number of each size of soda. However, he accidently put his work in the graph showing the degree measures he used to make the chart instead of the number of sodas he needed and he threw away his original paper showing the number of each. Help him figure out how many of each size of soda he needs to order by answering the questions below. (Hint: There are 360 degrees total in a full circle.)

Answers

Answer:

for a: small=17% medium=38% large=33% extra large=13%

Step-by-step explanation:

Small17% medium=38% large=33%

What is likely to have a mass close to 3 kilograms
A. 5-year-old-child
B. A Bowling ball
C. A lemon
D. A lion

Answers

B. A Bowling ball

3 kilograms is approximately 7 pounds, the weight of most Bowling balls

B. A Bowling ball

Step-by-step explanation:

Options A and D are most likely to weigh more than 3kg and option C will most likely weigh less but option B can weigh up to 3kg

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