With a sample size of 12, the P(t


With a sample size of 12, the P(t



The cost of textbooks is normally distributed with a mean of $218. You do not know the population standard deviation, but you know the sample standard deviation is $45.


What is the probability that from a sample of 10 textbooks, their average cost will be less than $201? (Report answer accurate to three decimal places.)



Jun 01, 2022
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