If 260 people work at a car making factory. Calculate if 90% of the workers said they liked the canteen food. Thus, there are number of workers who liked the canteen food.

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.