Test Hypotheses about a Population Proportion
-In 2002, the mean expenditure for auto insurance in a certain state was $\$ 806$. An insurance salesperson in this state believes that the mean expenditure for auto insurance is less today. She obtains a simple random sample of 32 auto insurance policies and determines the mean expenditure to be $\$ 781$ with a standard deviation of $\$ 39.13$. Is there enough evidence to support the claim that the mean expenditure for auto insurance is less than the 2002 amount at the $\alpha = 0.05$ level of significance?

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The Answer of Test Hypotheses about a Population Proportion
-In 2002, the mean expenditure for auto insurance in a certain state was $\$ 806$. An insurance salesperson in this state believes that the mean expenditure for auto insurance is less today. She obtains a simple random sample of 32 auto insurance policies and determines the mean expenditure to be $\$ 781$ with a standard deviation of $\$ 39.13$. Is there enough evidence to support the claim that the mean expenditure for auto insurance is less than the 2002 amount at the $\alpha = 0.05$ level of significance?

Test Hypotheses About a Population Proportion -In 2002, the Mean $806\$ 806$806

Test Hypotheses About a Population Proportion
-In 2002, the Mean $\$ 806$