In blue river terry can row 36 km downstream in 3 hours but it takes him 6 hours to row the same distance upstream. find the rate the rows still water and the rate of the current

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.