Suppose that in a certain region of the country the mean duration of first marriages that end in divorce is 7.8 years with a standard deviation of 1.2 years. Find the probability that in a sample of 75 divorces, the mean age of the marriages is at most 8 years.
Suppose that in a certain region of the country the mean duration of first marriages that end in divorce is 7.8 years with a standard deviation of 1.2 years. Find the probability that in a sample of 75 divorces, the mean age of the marriages is at most 8 years.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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