1. According to a study, the average number of hours of TV viewing per household per week in the Philippines is 50.4 hours and the standard deviation is 11.8 hours. If a random sample of 42 households is taken, what is the probability that- a.) the sample average is more than 52 hours? b.) the sample average is less than 47.5 hours?
1. According to a study, the average number of hours of TV viewing per household per week in the Philippines is 50.4 hours and the standard deviation is 11.8 hours. If a random sample of 42 households is taken, what is the probability that- a.) the sample average is more than 52 hours? b.) the sample average is less than 47.5 hours?
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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1. According to a study, the average number of hours of TV viewing per household per week in the Philippines is 50.4 hours and the standard deviation is 11.8 hours. If a random sample of 42 households is taken, what is the probability that-
a.) the sample average is more than 52 hours?
b.) the sample average is less than 47.5 hours?
c.) the sample average is less than 40 hours?
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