Question
The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of .2 inches. a)What
The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of .2 inches.
a)What is the probability that a randomly selected sample of 4 sheets will have an average length of less than 29.9 inches long?
b)What is the probability that a randomly selected sample of 4 sheets will have an average length of between 30.25 and 30.35 inches long?
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Calculus Early Transcendentals
Authors: James Stewart
7th edition
538497904, 978-0538497909
