13 A national survey of graduate students is conducted to assess their consumption of coffee. The following table summarizes the data. Do Not Drink Coffee Drink Decaffeinated Only Drink Caffeinated Coffee Male 145 94 365 Female 80 121 430 Compute the proportion of females that do not drink coffee. (Use the following answer format: #.###)

(b) Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cup. Assume the number of cups per day follows a normal distribution. Compute the proportion proportion that drink 2 cups per day or more. (Use the following answer format: #.####)

(c) Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cup. Assume the number of cups per day follows a normal distribution. Compute the proportion proportion that drink no more than 4 cups per day. (Use the following answer format: #.####)