Steven wants to start an ira that will have $375,263 in it when he retires in 30 years. how much should he invest semiannually in his ira to do this if the interest is 5.5% compounded semiannually? assume an annuity due. round to the nearest cent.

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.