Answered: What distribution are you using? What…

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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Professor Fair believes extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results follow. Test at the 0.01 level of significance that time to do a test and test results are independent.

	Exam Grades
Time	A	B	C	F	Row Total
1 hour	23	42	65	12	142

Unlimited	17	48	85	8	158

Column Total	40	90	150	20	300

What distribution are you using?
What test are you running?
What is your conclusion?

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