Concept explainers
A market researcher for a consumer electronics company wants to study the media viewing behaviour of residents of a particular area. A random sample of respondents is selected, and each respondent is instructed to keep a detailed record of time spent engaged viewing content across all screens (traditional TV, DVD/Blu-ray, game console, internet on a compute, video on a computer, video on a smartphone) in a particular week. The results are as follows:
Content viewing time per week:
32 respondents have high definition (HD) on at least one television set.
a. Construct
b. Construct 95% confidence
Suppose that the market researcher wants to take another survey In a different location. Answer these questions:
a. What
b. How many respondents need to be selected to be
c. Based on (c) and (d), how many respondents should the market researcher select if a single survey is being conducted?
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EBK BASIC BUSINESS STATISTICS
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