I do not understand standard deviation nor the empirical rule

Sep 26th, 2015
Anonymous
Category:
Accounting
Price: $5 USD

Question description

In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 49 and a standard deviation of 8. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 25 and 73?

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