The finishing times in the New York City 10-km run are normally distributed with mean 61 minutes and standard deviation 9 minutes. Determine the percentage of finishers with times between 50 and 70 minutes. Determine the percentage of finishers with times less than 75 minutes. Obtain and interpret the 40th percentile for the finishing times.

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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.