Mathematics, 20.02.2020 19:37 rujirasri3620
4. Household size in the United States has a mean of 2.6 people and standard deviation of 1.4 people. However this distribution is skewed right as the smallest possible value is a household of 1 person butthe largest households can be very large indeed.(a) Suppose one household in the US is to be randomly selected. Can you calculate the probabilitythat the household size is higher than 4? If yes, calculate it; if no, explain why not.(b) Suppose 120 households are randomly selected and the average values in the sample is calculated. What is the expected value of mean size in the sample of 120 households?(c) Suppose 120 households are randomly selected and the average values in the sample is calculated. What is the standard deviation of mean size in the sample of 120 households?(d) What is the probability that the mean size of a random sample of 120 households is more than 3?
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4. Household size in the United States has a mean of 2.6 people and standard deviation of 1.4 people...
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