The overhead reach distance of adult females are normally distributed with a mean of 204 cm and a standard deviation of 8.5.

 

A. Find the probability that an individual distance is greater than 216cm.

B. Find the probability that the mean for 23 randomly selected distance is greater than 202 cm.

C. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?

 

 

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