This is the same question I\'ve had to use again because the first had my answer
ID: 3326364 • Letter: T
Question
This is the same question I've had to use again because the first had my answer wrong. May you please make sure thsi answer is correct.?
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). Complete parts (a) through (d) below.
Financial
Energy
Utilities
10.73
12.72
11.88
15.12
13.91
5.76
17.21
6.43
13.67
5.03
11.19
9.90
19.59
18.93
3.95
8.16
20.73
3.44
10.38
9.60
7.11
6.75
17.40
15.70
(c) Are the mean rates of return different at the =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.)
Financial
Energy
Utilities
10.73
12.72
11.88
15.12
13.91
5.76
17.21
6.43
13.67
5.03
11.19
9.90
19.59
18.93
3.95
8.16
20.73
3.44
10.38
9.60
7.11
6.75
17.40
15.70
Explanation / Answer
I have used Excel to fid the F - test statistic for the ANOVA results for all three differnet population.
Here F = 2.0457 or 2.05
and F (critical) = 3.4668
Anova: Single Factor SUMMARY Groups Count Sum Average Variance Financial 8 92.97 11.62125 26.92361 Energy 8 110.91 13.86375 23.88811 Utilities 8 71.41 8.92625 20.89223 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 97.78863 2 48.89432 2.045675 0.154277 3.4668 Within Groups 501.9277 21 23.90132 Total 599.7163 23Related Questions
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