Austin record the weights in pounds, of nine fish in an acuarium. The data is shown in the list 8, 7.5, 7.6,3,7.4,7.9,8.1,2,7.7. Move words to the blanks to the best measure of variability for this data

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.