The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 380 grams and a standard deviation of 16 grams. Find the weight that corresponds to each event.(Use Excel or Appendix C to calculate thez-value. Round your final answers to 2 decimal places.)

a. Highest 20 percent

b. middle 60 percent

c. highest 80 percent

d. lowest 15 percent