Awinery is supplied with crushed grapes once a week. if its weekly volume of sales in thousands of gallons is a random variable with probability density function fptq “ # 5p1 ´ tq 4 0 ă t ă 1 0 otherwise what must the capacity of the tank be so that the probability of the supply being exhausted in a given week is 0.01?

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.