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Based on data obtained from AC Nielsen, the mean number of televisions in a household in...

Based on data obtained from AC Nielsen, the mean number of televisions in a household in the U.S. is 2.24, with a standard deviation of 1.38. A random sample of 40 households is obtained,

a) What is the probability the mean number of television in the sample is larger than 3?

B) What is the probability that the average number of televisions from the sample is between 2 to 4?

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