CNNBC recently reported that the mean annual cost of auto insurance is 974 dollars. Assume the standard deviation is 153 dollars. You will use a simple random sample of 144 auto insurance policies. Find the probability that a single randomly selected policy has a mean value between 957.4 and 972.7 dollars. P(957.4
CNNBC recently reported that the mean annual cost of auto insurance is 974 dollars. Assume the standard deviation is 153 dollars. You will use a simple random sample of 144 auto insurance policies. Find the probability that a single randomly selected policy has a mean value between 957.4 and 972.7 dollars. P(957.4
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Step 1
We have given that
X~N( μ , ?^2 )
μ = 974 , ? =153
Z-score =( x - μ )/?
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