Question
You may need to use the appropriatetechnologyto answer this question.The mean annual premium for automobile insurance in the United States is $1,503.Being from Pennsylvania, you
You may need to use the appropriatetechnologyto answer this question.The mean annual premium for automobile insurance in the United States is $1,503.Being from Pennsylvania, you believe automobile insurance is cheaper there and wish to develop statistical support for your opinion. A sample of 25 automobile insurance policies from the state of Pennsylvania showed a mean annual premium of $1,430with a standard deviation of
s= $160.
(a)Develop a hypothesis test that can be used to determine whether the mean annual premium in Pennsylvania is lower than the national mean annual premium.
H0:1,503
Ha:> 1,503
H0:> 1,503
Ha:1,503
H0:< 1,503
Ha:1,503
H0:= 1,503
Ha:1,503
H0:1,503
Ha:< 1,503
(b)What is a point estimate in dollars of the difference between the mean annual premium in Pennsylvania and the national mean? (Use the mean annual premium in Pennsylvania minus the national mean.)$
(c)At = 0.05, test for a significant difference.Find the value of the test statistic. (Round your answer to three decimal places.)Find thep-value. (Round your answer to four decimal places.)p-value = State your conclusion.
Do not rejectH0. We can conclude that the population mean automobile premium in Pennsylvania is lower than the national mean.
RejectH0. We cannot conclude that the population mean automobile premium in Pennsylvania is lower than the national mean.
Do not rejectH0. We cannot conclude that the population mean automobile premium in Pennsylvania is lower than the national mean.
RejectH0. We can conclude that the population mean automobile premium in Pennsylvania is lower than the national mean.
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