Question 7 The time required to assemble an electric motor in a factory is normally distributed...
Question 7 The time required to assemble an electric motor in a
factory is normally distributed with a mean of 16 minutes and a
standard deviation of 8 minutes.
Required of you:
a) What is the probability that a motor selected at random would have taken 17.75 minutes to assemble?
b) What is the probability that a motor selected at random would have taken between 10 and 20 minutes to assemble?
c) If it is uncertain whether the distribution is normal, what is the probability that a motor selected at random would take between 4 and 28 minutes to assemble?
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Question 7 The time required to assemble an electric motor in a
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