Answered: Step I. write correct hypothesis Step…

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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Step I. write correct hypothesis
Step II. Calculate the value of test statistic
Step III. Find out the rejection region or calculate the p-value
Step IV. Write the decision
Step V. Write a conclusion in the context of the problem

2. The mean score on a 25-point placement exam in mathematics used for the past two years at a large state university is 14.3. The placement coordinator wishes to test whether the mean score on a revised version of the exam differs from 14.3. She gives the revised exam to 20 entering freshmen early in the summer; the mean score is 14.6 with standard deviation 2.4.
a. Perform the test at the 10% level of significance using the critical value approach.
b. Perform the test at the 10% level of significance using the p-value approach.

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