The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped with a mean of 59 ounces and a standard deviation of 10 ounces. Using the Empirical Rule, answer the following questions. Suggestion: Sketch the distribution. a) 68% of the widget weights lie between and b) What percentage of the widget weights lie between 29 and 69 ounces? % c) What percentage of the widget weights lie below 79?
1. The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped with a mean of 59 ounces and a standard deviation of 10 ounces. Using the Empirical Rule, answer the following questions.
Suggestion: Sketch the distribution.
a) 68% of the widget weights lie between and
b) What percentage of the widget weights lie between 29 and 69 ounces? %
c) What percentage of the widget weights lie below 79?
2. 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 45 and a standard deviation of 6. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 33 and 57?
Do not enter the percent symbol.
ans = %
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