Whats the answer to the question below

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Finding tbe values of the variables in each kite

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.