In Exercises, assume a normal distribution. A machine produces screws with a mean length of 2.5 cm
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In Exercises, assume a normal distribution.
A machine produces screws with a mean length of 2.5 cm and a standard deviation of 0.2 cm. Find the probabilities that a screw produced by this machine has lengths as follows.
(a) Greater than 2.7 cm
(b) Within 1.2 standard deviations of the mean
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