(Answered) A researcher has gathered information from a random sample

Statistics

A researcher has gathered information from a random sample of 178 households. For each variable below, construct confidence intervals to estimate the population mean. Use the 90% level.

a. An average of 2.3 people resides in each household. Standard deviation is .35.

b. There was an average of 2.1 television sets (s = .10) and .78 telephones (s = .55) per household.

c. The households averaged 6.0 hours of television viewing per day (s = 3.0).

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