Answered: 1. Are the mean rates of return…

Name: A stock analyst wondered whether the mean rate of return of financial
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Description: A stock analyst wondered whether the mean rate of return of financial, energy, and utility stocks differed over the past 5 years. He obtained a simple random sample of eight companies from each of the three sectors and obtained the 5-year rates of

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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A stock analyst wondered whether the mean rate of return of financial, energy, and utility stocks differed over the past 5 years. He obtained a simple random sample of eight companies from each of the three sectors and obtained the 5-year rates of return shown in the accompanying table (in percent).

financial energy utilities

10.76 12.89 11.88

15.05 13.96 5.86

17.21 6.43 13.67

5.07 11.23 9.90

19.50 18.93 3.95

8.16 20.73 3.44

10.38 9.60 7.11

6.52 17.40 15.70

1. Are the mean rates of return different at the α=0.05 level of significance?

Use technology to find the F-test statistic for this data set.

F0=______?

(Round to two decimal places as needed.)

Determine the P-value and state the appropriate conclusion below.

Since the P-value is _____? there is not enough evidence to reject the null hypothesis. Thus, we cannot conclude that the mean rates of return are different at the α=0.05 evel of significance.

(Round to three decimal places as needed.)

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