The overhead reach distances of adult females are normally distributed with a mean of 195 cm and a standard deviation of 8 cm.  a. find the probability that an individual distance is greater than 207.50 cm.  b. find the probability that the mean for 25 randomly selected distances is greater than 193.70 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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.