Apirate's treasure chest is recovered. every crew member is promised one item from the chest chosen at random by the first mate. in the chest are 6 rubies, 27 diamonds, 2 sapphires, 12 strands of pearls, 42 silver coins, and 7 gold coins. what is the probability that billy, one of the crew members, will get a strand of pearls?

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.