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Problems 1. A high school principal is concerned with the amount of time her students devote to working at an after-school job. She randomly selects 25 students, obtain their working hours per week, and computes the mean to be 12.3 hrs with a s.d. of 11.2. She claims that this is significantly more than the mean of 10.7 hrs obtained from a study conducted by a national high school association. Test her claim by using a 0.05 level of significance.

Problems 1. A high school principal is concerned with the amount of time her students devote to working at an after-school job. She randomly selects 25 students, obtain their working hours per week, and computes the mean to be 12.3 hrs with a s.d. of 11.2. She claims that this is significantly more than the mean of 10.7 hrs obtained from a study conducted by a national high school association. Test her claim by using a 0.05 level of significance.

MATLAB: An Introduction with Applications
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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PROBLEM SET Problems 1. A high school principal is concerned with the amount of time her students devote to working at an after-school job. She randomly selects 25 students, obtain their working hours per week, and computes the mean to be 12.3 hrs with a s.d. of 11.2. She claims that this is significantly more than the mean of 10.7 hrs obtained from a study conducted by a national high school association. Test her claim by using a 0.05 level of significance.
Transcribed Image Text:PROBLEM SET Problems 1. A high school principal is concerned with the amount of time her students devote to working at an after-school job. She randomly selects 25 students, obtain their working hours per week, and computes the mean to be 12.3 hrs with a s.d. of 11.2. She claims that this is significantly more than the mean of 10.7 hrs obtained from a study conducted by a national high school association. Test her claim by using a 0.05 level of significance.
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