The weight of a small starbucks coffee is a normally distributed random variable with a mean of 340 grams and a standard deviation of 11 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 30 percent
b. middle 70 percent to
c. highest 90 percent
d. lowest 20 percent
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