Mathematics, 25.11.2021 14:50, agarza0326
Your boss tells you that she knows the length of the widgets your company makes is normally distributed with a mean of 25 inches and a population standard deviation of 12 inches. You take samples of size 9 from finished widgets in the warehouse, in order to check for quality.
a) What is the probability that your sample mean will be longer than 30 inches?
b) What is the probability that your sample mean will be between 21 and 29 inches?
Answers: 1
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