4.2 Quiz
1. Fourteen percent of workers believe they will need less than $250,000 when they retire. You
randomly select 10 workers and ask them how much money they think they will need for
retirement. Find the probability that the number of workers who say they will need less than
$250,000 when they retire is: (40 pts)
(a) Exactly two
(b) More than six

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)