Suppose you are dealt one card each from two separate decks of cards. What is the probability that
both of your cards are:
a) red?
b) spades?
c) jacks?
d) face cards?
4) A spinner with three equal spaces of red, blue, and green is spun one time. A single six-sided die is
rolled once. What is the probability that you get blue and a number greater than 3?
5) Suppose you are dealt two cards, one after another from a standard deck of cards. What is the probability
that both of your cards are:
a) spades?
b) the same suit?
c) kings?
8) A basket contains 8 female guinea pigs. Suppose that 5 of the 8 female guinea pigs are pregnant. Three
guinea pigs are selected from the basket at random with replacement. What is the probability that:
a) all three selected guinea pigs are pregnant?
b) none of the three selected guinea pigs are pregnant?
9) A classroom contains 12 males and 18 females. Two students will be randomly selected to give speeches.
What is the probability that the two students who give speeches are:
a) two females?
b) two males?
c) 1 male and 1 female (in either order)?
10) If 18% of all Americans are underweight, find the probability two randomly selected Americans will
both be underweight.
11) A survey found that 68% of book buyers are 40 years old or older. If two book buyers are selected at
random, what is the probability that both are 40 years old or older?
12) The Gallup Poll reported that 82% of Americans used a seat belt the last time they
got into a car.
If
four people are selected at random, find the probability that they all used a seat belt the last time they
got into a car.
15) At a local university, 70% of all incoming freshmen have computers. If three students are selected at
random, what is the probability that:
a) none have computers?
b) all three have computers?
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