Question 1 of 10 A store is offering 20% off all shoes. Rosalie purchases shoes and clothes.
The expression representing her total cost (including 7% tax) is
c+ (1 - 0.2)s + 0.07[c+ (1 - 0.2)s). Which term represents the cost of the
shoes after the discount?
A. (1 - 0.2)
B. [c+ (1 - 0.2)s]
C. 0.07[c+ (1 - 0.2)s]
D. (1 - 0.2)s
SUBMIT

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.