Mathematics, 13.10.2021 23:20 skylex

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 390 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. (Use Excel or Appendix C to calculate the z-value. Round your final answers to 2 decimal places.) a. Highest 10 percent

b. Middle 50 percent to

c. Highest 80 percent

d. Lowest 10 percent

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