8. A survey was conducted to learn about the shopping preference of consumers during the
holiday season. Out of 2000 respondents 22% said they would prefer to shop online
because of the free shipping offered; 45% said that they would like to shop in malls and
discount outlets while 15% of the shoppers said they would use both. The probability
that a randomly selected shopper would use at least one method of shopping is:
(a) 67%
(b) 52%
(c) 82%
(d) 60%
(e) 80%
9. In the Powerball lottery, a player first selects five different numbers between 1 and 59.
After selecting the five numbers, the player then selects one number between 1 and 35.
This number is known as the Powerball. To calculate the odds of winning, we multiply the
number of ways the five numbers can be drawn from 1 and 59 by 35. The number of
ways the winning Powerball number can be drawn or the chance of winning the
Powerball is 1 divided by one of the following numbers:
(a) 5,006,386
(b) 230,000,000
(c) 175,223,510
(d) 180,345,876
(e) 190,678,000
3 answers