Refer to Exercise 16.47. Estimate with 90% confidence the mean number of days watching the national news
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Refer to Exercise 16.47. Estimate with 90% confidence the mean number of days watching the national news on television for the population of 70-year-olds.
In exercise 16.47
National news on television features commercials describing pharmaceutical drugs that treat ailments that plague older people. Apparently, the major networks believe that older people tend to watch national newscasts. The marketing manager of a drug company conducted a survey that took a random sample of people older than 60 years of age and recorded their age and the number of days they watched national on television in a typical week.
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LCL 1892 UCL 2103 A 1 Predict Estimate of y 2 3 Sample mean of x 4 Sample variance ...View the full answer
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