The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 38 ounces and a standard deviation of 6 ounces. Use the Empirical Rule. a) 99.7% of the widget weights lie between and b) What percentage of the widget weights lie between 32 and 56 ounces? % c) What percentage of the widget weights lie below 50 ? %

• 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 60 and a standard deviation of 4. Using the empirical rule, what is the approximate percentage of daily phone calls numbering between 48 and 72?
• The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 65 and a standard deviation of 11. Using the empirical rule, what is the approximate percentage of lightbulb replacement requests numbering between 65 and 98?