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Finding Evidence to Reject Agencies Claims

1. A regulatory agency claims the mean weekly telemarketing calls a citizen receives is 18 or less. A consumer advocacy group surveyed 81 citizens and found that the mean number of calls they received weekly was 19. At a level of significance of alpha = 0.05 is there sufficient evidence to reject the agencies claim? Assume standard deviation = 4.


Solution Summary

The solution finds evidence in order to reject agencies claims in telemarketing.