H0: u1=u2=u3=u4 --------- claim or not? H1: At least one mean is different from the others--------claim or not? Find the critical value Compute the test value: F = Reject or do not reject the null hypothesis Summarize: Is there or is there not enough evidence to support claim? Is there or is there not enough evidence to reject the claim?

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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Cell Phone Bills The average local cell phone monthly bill is $50.07. A random sample of monthly bills from three different providers is listed below. At α=0.10, is there a difference in mean bill amounts among providers?

Provider X Provider Y Provider Z
57.67
62.74
46.34
87.87
68.68
70.03
89.87
78.67
53.39
78.54
91.23
57.39
64.56
98.54
56.45
  1. H0: u1=u2=u3=u4 --------- claim or not?
    H1: At least one mean is different from the others--------claim or not?
  2. Find the critical value
  3. Compute the test value: F =
  4. Reject or do not reject the null hypothesis
  5. Summarize:
    Is there or is there not enough evidence to support claim?
    Is there or is there not enough evidence to reject the claim?
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