2) A market researcher for a consumer electronics company wants to study the television viewing habits of residents in a particular area. A random sample of 40 respondents is selected, and each respondent is instructed to keep a detailed record of all television viewing in a particular week. The population standard deviation (sigma) is unknown.
The results are as follows:
– viewing time per week:x-bar=15.3 hours, S=3.8 hours
– 27 respondents watch the evening news on at least three week nights
d) construct a 95% confidence interval estimate for the mean amount of television watched per week in this area
e) construct a 95% confidence interval estimate for the population proportion who watch the evening news on at least three weeknights per week
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