Answered: Can you answer parts a,b, and c please?…

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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Can you answer parts a,b, and c please?

Mike claims that more than 80% of all investors believe the stock market will continue to decline the rest of the year. In order to test Mike's claim, a sample of 150 investors is taken. In the sample, 105 investors indicated that they believe the stock market will continue to decline the rest of the year.

a. State the null and alternative hypothesis that would be used to test Mike's claim that more than 80% of all investors believe the stock market will continue to decline the rest of the year.

b. What is the appropriate test statistic?

c. Determine the critical value(s) for this test usign a 5% significance level.

d. Calculate the value of the test statistic based upon the sample result.

e. What is your decision and conclusion?

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