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 48 and a standard deviation of 7. Using the empirical rule, what is the approximate percentage of daily phone calls numbering between 34 and 62?
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
Given Information:
Mean
Standard deviation
Using empirical rule, to find the approximate percentage of daily phone calls numbering between 34 and 62:
The empirical rule of normal distribution is as follows:
68% of the data values fall within one standard deviation of the mean i.e.,
95% of the data values fall within two standard deviations of the mean i.e.,
99.7% of the data values fall within three standard deviations of the mean i.e.,
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