1. The distribution of the actual weight of potato chips in a 16 ounce sack is thought to be bell-shaped with a mean equal to 16 ounces and a standard deviation equal to 0.45 ounces. Based on this, between what two limits could we expect 68 percent of all sacks to weigh?
A. 14 to 18 ounces B. 15.55 to 16.45 ounces C. 15.10 to 16.90 ounces D. 14.65 to 17.35 ounces
2. The number of days that homes stay on the market before they sell in Houston is bell-shaped with a mean equal to 59 days. Further, 95 percent of all homes are on the market between 41 and 77 days. Based on this information, what is the standard deviation for the number of days that houses stay on the market in Houston?
A. 9
B. 18
C. 3
D. 8