Discuss the below:
Q1: A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the SD is $100.
(a) What statement can you make about the range $300 to $700?
(b) What statement can you make about the range $480 to $520?
Q2: Pollsters try to determine whether or not a person is a 'likely voter' before they count their opinion in a poll. If we assume 40% of the registered voters will actually vote, in a random sample of 100 registered voters we can be 95% confident that somewhere between ________ and ________ of them will actually vote. Fill in the blanks with a number.