Bailie read that she can burn 236 calories by bicycling at 10 mph for 1 hour, or 502 calories by bicycling at 14 mph for 1 hour. How long would she need to bicycle at 10
mph to burn as many calories as she would by bicycling at 14 mph for 1 h? Set up as a proportion

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.