Can someone explain how to get the answers step by step? I'm really confused by this...

Can someone explain how to get the answers step by step? I'm really confused by this stats question and I really need it "dummied down."

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

A. An average of 2.3 people resides in each household. Standard devisfikn is 0.35

B. There was an average of 2.1 television sets (s= 0.10) and 0.78 telephones (s=0.55) per household

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

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orchestra answered 1 year ago

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