# Probability - Mean & Standard Deviation

**Question description**

The overhead reach distances of adult females are normally distributed with a mean of 197.5 cm197.5cmand a standard deviation of 8 cm8cm.a. Find the probability that an individual distance is greater than 207.50207.50cm.b. Find the probability that the mean for 2020randomly selected distances is greater than 195.30 cm.195.30cm.c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?

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