Name: ____________________________________
Alg 2/H Regents Review #22 due 5/12
1. The probability of event A is 0.4. The
probability of event B is 0.6. If the probability of
event A given event B is 0.5, then the two events
are
1. Independent 3. Complements
2. Dependent 4. Mutually Exclusive
4. There are 4 students running for Student
Government President. A survey was taken asking
100 students which candidate they would vote for
in the election. The results are shown in the table
below:
2. The set of data in the table below shows the
results of a survey on the number of messages
that people of different ages text on their cell
phones each month.
If a person from this survey is selected at
random, what is the probability that the person
texts over 50 messages per month given that the
person is between the ages of 23 and 60?
Based on the table, what is the probability that a
student chosen at random will vote for Lyshon?
1. 2. 1. 3. 2. 4. 3. 4. 3. Sean’s team has a baseball game tomorrow.
He pitches 50% of the games. There is a 40%
chance of rain during the game tomorrow. If the
probability that it rains given that Sean pitches is
40%, it can be concluded that these two events
are
1. independent 3. mutually exclusive
2. dependent 4. complements
5. Events F and L have probabilities such that:
P(F) = 0.5
P(L) = 0.4
Are events F and L independent?
1. Yes, because .
2. Yes, because .
3. No, because 4. No, because .
.
6. One hundred seventy-six runners have signed
up for Race A, Race B, or both.
127 people plan to run in Race A.
98 people plan to run in Race B.
8. Monique has three sons who play football, two
sons who play baseball, and one son who plays
both sports. If all of her sons play baseball or
football, how many sons does she have?
1. 5 3. 3
2. 6 4. 4
9. Which event is certain to happen?
1. Everyone walking into a room will have red
hair.
2. All babies born in June will be males.
3. The Yankees baseball team will win the
World Series.
4. The Sun will rise in the east.
10. John holds 4 playing cards consisting of 2
kings and 2 jacks. Without looking, Jenna draws
two cards at random. What is the probability that
one of Jenna’s cards is a king and the other is a
jack?
1. How many runners plan to run in both races?
1. 19 3. 49
2. 29 4. 59
7. A school offers three classes of math and two
classes of science, all of which meet at different
times. What is the total number of ways a student
can take a math class and a science class?
1. 5 3. 8
2. 6 4. 9
2. 3. 4.