Constance is saving money to buy a new bicycle that costs 195.75.she already 40 saved and plans to save 8 each week. how many weeks will take her to save enough money to purchase the bicycle?

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.