Javier had $305 in his bank account his bank charges a fee of $7.50 each month that a balance is below $500 if he makes no other deposits or withdraws how much money is in javier account at the end of three months

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.