1) An article in the National Geographic News ("U.S. Racking Up Huge Sleep Debt," February 24, 2005) argues that Americans are increasingly skimping on their sleep. A researcher in a sma Midwestern town wants to estimate the mean weekday sleep time of its adult residents. He takes a random sample of 30 adult residents and records their weekday mean sleep time as 65 hours. The sample standard deviation is calculated to be 1.2 hours SHOW YOUR WORK. (3 points) A) Calculate the 95% confidence interval for the population mean weekday sleep time of all adult residents of this Midwestem town. (Round intermediate calculations to at least 4 decimal places. Round final answer to 2 decimal places.) B) Can we conclude with 95% confidence that the mean sleep time of all adult residents in this midwestern town is not 7 hours? Yes, since the confidence interval contains the value 7. Yes, since the confidence interval does not contain the value 7. No, since the confidence interval contains the value 7 . No, since the confidence interval does not contain the value 7