Grace Floral Shop claims that their average daily earnings is $497. An auditor wants to determine whether this claim is true. The auditor randomly selected a sample of 100 days and found that the sample mean earnings was $495 with a sample standard deviation of 9.75. Assist the auditor in conducting a hypothesis test, at the 3% level of significance, to determine whether the claim about their average daily earnings was overstated. a) State the null and the alternative hypothesis for this test.  b) Using the p-value approach, state the decision rule for this test.  c) Calculate the value of the test statistic for this test.

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Grace Floral Shop claims that their average daily earnings is $497. An auditor wants to
determine whether this claim is true. The auditor randomly selected a sample of 100
days and found that the sample mean earnings was $495 with a sample standard deviation of
9.75.

Assist the auditor in conducting a hypothesis test, at the 3% level of significance, to determine
whether the claim about their average daily earnings was overstated.

a) State the null and the alternative hypothesis for this test. 
b) Using the p-value approach, state the decision rule for this test. 
c) Calculate the value of the test statistic for this test. 

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