An introductory apr is the interest that applies to a. cash advances within the introductory period b. purchases within the introductory period c. cash advances after the introductory period d. purchases after the introductory period

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.

Pls the last one and it has to be like number 6

The product of sin 30 degrees and sin 60 degrees is same as the product of