TV sets: According to the Nielsen Company, the mean number of TV sets in a U.S....

  

Transcribed Image Text:

TV sets: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24. Assume the standard deviation is 1.4. A sample of 85 households is drawn. Use the Cumulative Normal Distribution Table if needed. Part 1 of 5 What is the probability that the sample mean number of TV sets is greater than 27 Round your answer to four decimal places. The probability that the sample mean number of TV sets is greater than 2 is Part 2 of 5 What is the probability that the sample mean number of TV sets is between 2.5 and 3? Round your answer to four decimal places. The probability that the sample mean number of TV sets is between 2.5 and 3 is Part 3 of 5 th Find the 90 percentile of the sample mean. Round your answer to two decimal places. The 90 percentile of the sample mean is C E 9 ah S 61 Part 3 of 5 Find the 90th percentile of the sample mean. Round your answer to two decimal places. The 90th percentile of the sample mean is Part 4 of 5 Would it be unusual for the sample mean to be less than 2? Round your answer to four decimal places. unusual because the probability of the sample mean being less than 2 is It (Choose one) Part 5 of 5 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 four decimal places. It (Choose one) be unusual for an individual household to have fewer than 2 TV sets, since the probability is TV sets: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24. Assume the standard deviation is 1.4. A sample of 85 households is drawn. Use the Cumulative Normal Distribution Table if needed. Part 1 of 5 What is the probability that the sample mean number of TV sets is greater than 27 Round your answer to four decimal places. The probability that the sample mean number of TV sets is greater than 2 is Part 2 of 5 What is the probability that the sample mean number of TV sets is between 2.5 and 3? Round your answer to four decimal places. The probability that the sample mean number of TV sets is between 2.5 and 3 is Part 3 of 5 th Find the 90 percentile of the sample mean. Round your answer to two decimal places. The 90 percentile of the sample mean is C E 9 ah S 61 Part 3 of 5 Find the 90th percentile of the sample mean. Round your answer to two decimal places. The 90th percentile of the sample mean is Part 4 of 5 Would it be unusual for the sample mean to be less than 2? Round your answer to four decimal places. unusual because the probability of the sample mean being less than 2 is It (Choose one) Part 5 of 5 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 four decimal places. It (Choose one) be unusual for an individual household to have fewer than 2 TV sets, since the probability is

Answer rating: 100% (QA)

for normal distribution ... View the full answer