Question: quantative method course 8. A process makes units with a mean length of 60cm and standard deviation of 1cm. what is the probability that a

quantative method course

8. A process makes units with a mean length of 60cm and standard deviation of 1cm. what is the probability that a sample of 36 units has a mean length of less than 59.7cm ? John Lo thinks that the mean value of orders received by his firm is $260. He checks a sample of 36 accounts and finds a mean of $240 and standard deviation of $45. Does this evidence support his believe

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