Answered: Suppose a university advertises that…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose a university advertises that it's average class size is 37 or less. A students organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 classes was selected, and the average class size was found to be 38.8 students. Assume that the standard deviation for class size at the college is 9 students. using a= 0.01, complete parts a and b below.

a) does the student organization have enough evidence to refute the colleges claim?

b) determine the p-value for this test.

Suppose a university advertises that its average class size is 37 or less. A student organization is concemed that budget cuts have led to increased class sizes and would like to test this claim. A random sample
of 43 classes was selected, and the average class size was found to be 38.8 students. Assume that the standard deviation for class size at the college is 9 students. Using a=0.01, complete parts a and b below.
a. Does the student organization have enough evidence to refute the college's claim?
Determine the null and alternative hypotheses.
Ho: H
The z-test statistic is
(Round to two decimal places as needed.)
The critical z-score(s) is(are)-
(Round to two decimal places as needed. Use a comma to separate answers as needed.)
Because the test statistic
the null hypothesis.
b. Determine the p-value for this test.
The p-value is
(Round to three decimal places as needed.)
Enter vour answer in each of the answer boxes.

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