Bestseller Books The mean for the number of weeks 15 New York Times hard-cover fiction books spent on the bestseller list is 22 weeks. The standard deviation is 6.17 weeks. The mean for the number of weeks 15 New York Times hard-cover nonfiction books spent on the list is 28 weeks. The standard deviation is 13.2 weeks. At a _ 0.10, can we conclude that there is a difference in the mean times for the number of weeks the books were on the bestseller lists?

Tuesday, January 17 4.3 Good and Poor Ways to Experiment • Experimental unit (or subject): is the person or object upon which a treatment is applied • Treatment: a condition applied to the subject (a new drug, perhaps) • Explanatory variable: explains...