Chapter 5

You are dealt one card from a standard 52-card deck. Find the probability of being dealt an ace or a 6.

2/13

Use the spinner below to answer the question. Assume that it is equally probable that the pointer will land on any one of the five numbered spaces. If the pointer lands on a borderline, spin again.

2/5

A church has 7 bells in its bell tower. Before each church service 5 bells are rung in sequence. No bell is rung more than once. How many sequences are there?

2520

The sample space for tossing three fair coins is {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. What is the probability of exactly two heads?

3/8

There are 39 chocolates in a box, all identically shaped. There 15 are filled with nuts, 10 with caramel, and 14 are solid chocolate. You randomly select one piece, eat it, and then select a second piece. Find the probability of selecting 2 nut candies.

35/247

Three fair coins are tossed in the air and land on a table. The up side of each coin is noted. How many elements are there in the sample space?

8

The probability that event A will occur is P(A) = Number of successful outcomes/total number of all possible outcomes

True

A probability experiment is conducted in which the sample space of the experiment is s={1,2.3,4,5,6,7,8,9,10,11,12,13,14,15} Let event A={6,7,8,9} and event B={8,9,10,11,12} Assume that each outcome is equally likely. List the outcomes in A and B. Are A and B mutually exclusive?

{8,9} no

Which of the following cannot be the probability of an event?

-61

Suppose that events E and F are independent, P(E) = 0.2 and P(F ) = 0.7. What is the P(E and F )?

.14

Suppose that E and F are two events and that P(E and F) = 0.32 and P(E) = 0.8. What is P(E)?

.4

The events A and B are mutually exclusive. If P(A) = 0.7 and P(B) = 0.1, what is P(A or B)?

.8

Suppose that E and F are two events and that P(E) = 0.2 and P(E) = 0.3. What is P(E and F)?

0.06

Suppose that M and N are two events, P(M) = 0.16, P(N) = 0.07, and P(M and N) = 0.03. What is P(M|N)?

0.429

If P(B) = 0.4, P(A or B) = 0.7, and P(A and B) = 0.3, find P(A).

0.6

If you toss a fair coin 8 times, what is the probability of getting all heads? Express the probability as a simplified fraction.

1/256

From 9 names on a ballot, a committee of 5 will be elected to attend a political national convention. How many different committees are possible?

126

Computing the probability of the event "drawing a second red ball from a bag of colored balls after having kept the red ball that was drawn first from the bag" is an example of

Conditional Probability

If two events have no outcomes in common they are said to be

Disjoint

The probability that event A will occur is P(A) = Number of successful outcomes/number of unsuccessful outcomes

False