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In a mid-size company, the distribution of the number of phone calls answered each day by...

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 35 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 28 and 42?

Do not enter the percent symbol.

ans = %

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