CNNBC recently reported that the mean annual cost of auto insurance is 1031 dollars. Assume the standard deviation is 204 dollars, and the cost is normally distributed. You take a simple random sample of 39 auto insurance policies. Round your answers to 4 decimal places. a. What is the distribution of X? X- N b. What is the distribution of z? -NG c. What is the probability that one randomly selected auto insurance is more than $988? d. a simple random sample of 39 auto insurance policies, find the probability that the average cost is more than $988. e. For part d), is the assumption of normal necessary? ONoOYes
CNNBC recently reported that the mean annual cost of auto insurance is 1031 dollars. Assume the standard deviation is 204 dollars, and the cost is normally distributed. You take a simple random sample of 39 auto insurance policies. Round your answers to 4 decimal places. a. What is the distribution of X? X- N b. What is the distribution of z? -NG c. What is the probability that one randomly selected auto insurance is more than $988? d. a simple random sample of 39 auto insurance policies, find the probability that the average cost is more than $988. e. For part d), is the assumption of normal necessary? ONoOYes
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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I need part d and e only
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