Q9
A manufacturer knows that their items have a normally
distributed length, with a mean of 12.1 inches, and standard
deviation of 0.9 inches.
If 24 items are chosen at random, what is the probability that
their mean length is less than 12.5 inches?
Round to 4 decimal places.
Answers obtained using exact z-scores or z-scores rounded to 2
decimal places are accepted.
Q9 A manufacturer knows that their items have a normally distributed length, with a mean of 12.1 inches, and standard de
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answerhappygod
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Q9 A manufacturer knows that their items have a normally distributed length, with a mean of 12.1 inches, and standard de
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