Question

Use the following information to answer the next four exercises. Two students are interested in whether or not there is variation in their test scores for math class. There are 15 total math tests they have taken so far. The first student’s grades have a standard deviation of 38.1. The second student’s grades have a standard deviation of 22.5. The second student thinks his scores are lower. At the 5% significance level, do we reject the null hypothesis?

          Use the following information to answer the next four exercises. Two students are interested in whether or not there is variation in their test scores for math class. There are 15 total math tests they have taken so far. The first student’s grades have a standard deviation of 38.1. The second student’s grades have a standard deviation of 22.5. The second student thinks his scores are lower.

At the 5% significance level, do we reject the null hypothesis?

Added by Kristin L.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Ivan Kochetkov

12/02/2023

Step 1

Define the null hypothesis (H0) and the alternative hypothesis (H1). H0: There is no significant difference in the variation of test scores between the two students. H1: There is a significant difference in the variation of test scores between the two students. Show more…

Show all steps

Thanks for your feedback!

Use the following information to answer the next four exercises. Two students are interested in whether or not there is variation in their test scores for math class. There are 15 total math tests they have taken so far. The first student’s grades have a standard deviation of 38.1. The second student’s grades have a standard deviation of 22.5. The second student thinks his scores are lower. At the 5% significance level, do we reject the null hypothesis?