MATH 1342 EXAM 2 REVIEW FREQUENTLY TESTED
ACTUAL QUESTIONS WITH CORRECT ANSWERS
Question 1.
Find the odds for and against drawing a card from a deck and getting a club.
ANSWER
1:3, 3:1
Question 2.
Find the probability P(X; λ): P(6, 3)
ANSWER
0.274
Question 3.
There are 4 different mathematics courses, 5 different science courses, and 3 different history courses.
If a student must take one of each, how many different ways can this be done?
ANSWER
60
Question 4.
A normal population has a mean μ = 31 and standard deviation What proportion of the population is
less than 29?
ANSWER
0.4013
Question 5.
How many ways can a student select five questions from an exam containing 12 questions, if one of
the five must be the last question?
ANSWER
330
1/5
, Question 6.
Let A, B and C be independent events with P(A) = 0.4, P(B) = 0.8, and P(C) = 0.6. Find P(A and B and C).
ANSWER
0.192
Question 7.
Find the mean of the distribution shown below.
ANSWER
6.23 (0.21, 0.07, 0.58, 0.14)
Question 8.
Find the area under the standard normal distribution curve between z=0 and z= -2.16
ANSWER
0.4846
Question 9.
Find the probability P(z > -0.59) using the standard normal distribution.
ANSWER
0.7224
Question 10.
The average height of flowering cherry trees in a certain nursery is 9.5 feet. If the heights are normally
distributed with a standard deviation of 1.3 feet, find the probability that a tree is less than 11.5 feet
tall.
ANSWER
0.94
Question 11.
A coin is tossed five times. Find the probability of getting exactly three heads.
ANSWER
0.313
2/5
ACTUAL QUESTIONS WITH CORRECT ANSWERS
Question 1.
Find the odds for and against drawing a card from a deck and getting a club.
ANSWER
1:3, 3:1
Question 2.
Find the probability P(X; λ): P(6, 3)
ANSWER
0.274
Question 3.
There are 4 different mathematics courses, 5 different science courses, and 3 different history courses.
If a student must take one of each, how many different ways can this be done?
ANSWER
60
Question 4.
A normal population has a mean μ = 31 and standard deviation What proportion of the population is
less than 29?
ANSWER
0.4013
Question 5.
How many ways can a student select five questions from an exam containing 12 questions, if one of
the five must be the last question?
ANSWER
330
1/5
, Question 6.
Let A, B and C be independent events with P(A) = 0.4, P(B) = 0.8, and P(C) = 0.6. Find P(A and B and C).
ANSWER
0.192
Question 7.
Find the mean of the distribution shown below.
ANSWER
6.23 (0.21, 0.07, 0.58, 0.14)
Question 8.
Find the area under the standard normal distribution curve between z=0 and z= -2.16
ANSWER
0.4846
Question 9.
Find the probability P(z > -0.59) using the standard normal distribution.
ANSWER
0.7224
Question 10.
The average height of flowering cherry trees in a certain nursery is 9.5 feet. If the heights are normally
distributed with a standard deviation of 1.3 feet, find the probability that a tree is less than 11.5 feet
tall.
ANSWER
0.94
Question 11.
A coin is tossed five times. Find the probability of getting exactly three heads.
ANSWER
0.313
2/5
