viation is 295 dollars, and the cost is normally distributed. You take a simple random sample of 9 auto urance policies. Round your answers to 4 decimal places. a. What is the distribution of X? X - N( b. What is the distribution of ? ~ N( c. What is the probability that one randomly selected auto insurance is less than $1079? d. a simple random sample of 9 auto insurance policies, find the probability that the average cost is less than $1079. e. For part d), is the assumption of normal necessary? O No Yes > Next Question

Q: A 95% confidence interval for the population proportion is (.). (Round to three decimal places as…

A: HERE GIVEN ,  sample size  = 2271  X=  no of adult believe in UFOs = 716  p^ = 7162271 = 0.3153

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A: here given , mean = 15.2  standard deviation  = 4.3

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A:

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A: Given n=50 X-bar=5.658 S=0.064

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