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TV sets: According to the Nielsen Company, the mean number of TV sets in a U.S. household was 2.24. Assume the standard deviation is 1.1.
TV sets: According to the Nielsen Company, the mean number of TV sets in a U.S. household was 2.24. Assume the standard deviation is 1.1. A sample of 80 households is drawn. Part: 0 / 5 Part 1 of 5 (a) What is the probability that the sample mean number of TV sets is greater than 2? Round your answer to at least four decimal places. The probability that the sample mean number of TV sets is greater than 2 is Part 2 of 5 (b) What is the probability that the sample mean number of TV sets is between 2.5 and 3? Round your answer to at least four decimal places. The probability that the sample mean number of TV sets is between 2.5 and 3 is | | X S Part: 2 / 5 (N Part 3 of 5 th (c) Find the 10 percentile of the sample mean. Round your answer to at least two decimal places. The 10 percentile of the sample mean is | | % s Part 4 of 5 (d) Using a cutoff of 0.05, would it be unusual for the sample mean to be less than 2? Round your answer to at least four decimal places. It [(Choose one) |unusual because the probability of the sample mean being less than 2 is | ' Part: 4 / 5 N Part 5 of 5 (e) Using a cutoff of 0.05, do you think it would be unusual for an individual household to have fewer than 2 TV sets? Explain. Assume the population is approximately normal. Round your answer to at least four decimal places. It [(Choose one) |be unusual for an individual household to have fewer than 2 TV sets, since the probability is ' |
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