Question: Making handcrafted pottery generally takes two major steps: wheel throwing and firing. The time of wheel throwing and the time of firing are normally distributed

Making handcrafted pottery generally takes two major steps: wheel throwing and firing. The time of wheel throwing and the time of firing are normally distributed random variables with means of 40 min and 60 min and stan dard deviations of 2 min and 3 min, respectively.

(a) What is the probability that a piece of pottery will be fin- ished within 95 min?

(b) What is the probability that it will take longer than 110 min?

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