In 2010, the mean expenditure for auto insurance in a certain state was $806. An insurance salesperson in thisstate believes that the mean expenditure for auto insurance is less today. She obtains a simple random sampleof 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 thanthe 2010 amount at the α = 0.05 level of significance?

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The Answer of In 2010, the mean expenditure for auto insurance in a certain state was $806. An insurance salesperson in thisstate believes that the mean expenditure for auto insurance is less today. She obtains a simple random sampleof 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 thanthe 2010 amount at the α = 0.05 level of significance?

In 2010, the Mean Expenditure for Auto Insurance in a Certain