An apartment building has 20 two-bedroom apartments and 8 three-bedroom apartments. If 4 apartments are chosen at random to be redecorated, what are the probabilities that
MAT135 Introduction to Statistics and Data Analysis
Module 6 TEST
Test #4
Name _______________________________
1. An apartment building has 20 two-bedroom apartments and 8 three-bedroom apartments. If 4 apartments are chosen at random to be redecorated, what are the probabilities that
a) All will be two-bedroom apartments ?
(b) 2 will be two-bedroom apartments and 2 will be three-bedroom apartments ?
2. A bowl contains 33 red beads, 11 white beads, 9 blue beads, and 15 black beads. If one bead is drawn at random, what are the probabilities of getting
(a) a red bead
(b) a bead that is white or black
C) a bead that is neither red nor black
3. A carton of 18 lightbulbs includes 5 that are defective. If two bulbs are drawn at random, what are the probabilities that
(a) neither bulb will be defective
(b) exactly 1 bulb will be defective
(c ) both bulbs will be defective
4. If three cards are drawn from a well-shuffled deck of 52 playing cards, what are the probabilities of getting
a) three diamonds
(b) an Ace, a Queen, and a King
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