CNNBC recently reported that the mean annual cost of auto insurance is 1016 dollars. Assume the standard deviation is 213 dollars, and the cost is normally distributed. You take a simple random sample of 38 auto insurance policies. Round your answers to 4 decimal places.What is the distribution of XX? XX ~ N(,)What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)What is the probability that one randomly selected auto insurance is more than $1054? a simple random sample of 38 auto insurance policies, find the probability that the average cost is more than $1054. For part d), is the assumption of normal necessary? NoYes

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MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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CNNBC recently reported that the mean annual cost of auto insurance is 1016 dollars. Assume the standard deviation is 213 dollars, and the cost is normally distributed. You take a simple random sample of 38 auto insurance policies. Round your answers to 4 decimal places.

What is the distribution of XX? XX ~ N(,)
What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)
What is the probability that one randomly selected auto insurance is more than $1054?
a simple random sample of 38 auto insurance policies, find the probability that the average cost is more than $1054.
For part d), is the assumption of normal necessary? NoYes

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CNNBC recently reported that the mean annual cost of auto insurance is 1033 dollars. Assume the standard deviation is 296 dollars, and the cost is normally distributed. You take a simple random sample of 38 auto insurance policies. Round your answers to 4 decimal places.

What is the distribution of �? � ~ N(,)
What is the distribution of �¯? �¯ ~ N(,)
What is the probability that one randomly selected auto insurance is less than $1102?
a simple random sample of 38 auto insurance policies, find the probability that the average cost is less than $1102.

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