1. According to the school librarian, the average number of pages of books in the reference section is 240. To test her claim, she collected a sample of 15 books and after noting the number of pages of each book, she determined that the mean number of pages is 224.6 with a standard deviation of 4.1. At a = 0.01, will the librarian be able to prove her claim?

1. According to the school librarian, the average number of pages of books in the reference section is 240. To test her claim, she collected a sample of 15 books and after noting the number of pages of each book, she determined that the mean number of pages is 224.6 with a standard deviation of 4.1. At a = 0.01, will the librarian be able to prove her claim?

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Description: 1. According to the school librarian, the average number of pagesof books in the reference section is 240. To test her claim, shecollected a sample of 15 books and after noting the number ofpages of each book, she determined that the mean number ofp

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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Question

1. According to the school librarian, the average number of pages
of books in the reference section is 240. To test her claim, she
collected a sample of 15 books and after noting the number of
pages of each book, she determined that the mean number of
pages is 224.6 with a standard deviation of 4.1. At a = 0.01, will
the librarian be able to prove her claim?
2. The standard deviation of the number of minutes of calls of a
certain subscriber is 40 minutes per day. A sample of 10 days
gave a variance of 38 minutes. Test the hypothesis with a = 0.05
that the standard deviation of the call usage is not equal to 40.

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