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The lengths of lumber a machine cuts are normally distributed with a mean of103 inches and a standard deviation .4 ofinch. (a) What is the

The lengths of lumber a machine cuts are normally distributed with a mean of103 inches and a standard deviation .4 ofinch.

(a) What is the probability that a randomly selected board cut by the machine has a length greater than 103.16inches?

(b) A sample of 35boards is randomly selected. What is the probability that their mean length is greater than103.16 inches

Part A is .3446 done on StatCrunch, how do I compute Part B on statcrunch or Ti83?

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