If the weights of 1,000 adult men in a county are plotted on a histogram, which curve is most likely to fit the histogram? a. a u-shaped curve, better known as a normal distribution b. a star-shaped curve, better known as a normal distribution c. a bell-shaped curve, better known as a normal distribution d. a bell-shaped curve, known as an exponential distribution

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.