Please help, its due tom?
A tourist agency in Hawaii claims the mean daily cost of meals and lodging for a family of 4 is at most $650. You work for a consumer advocate and want to test this claim. In a random sample of 45 families of 4 travelling in Hawaii, the mean daily cost of meals and lodging is $657 with a standard deviation of $40. At = .05, do you have enough evidence to reject the tourist agencys claim?
For the following problems:(12 points each)
a.Write the claim mathematically and identify H0 and Ha.
b.Find the critical values and identify the rejection region.
c.Find the standardized test statistic (z-value)
d.Decide whether to reject or fail to reject the null hypothesis
e.Interpret the decision
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