BQA Final Exam Questions with Answers
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__________ is a method of interpreting the standard deviation of data that have a mound-
shaped, symmetric distribution. The Empirical Rule
According to the empirical rule, z-scores of less than -3 or greater than 3 occur very infrequently
for data from a mounded and symmetric distribution True
If a z-score is 0 or near 0, the measurement is located at or near the mean. True
If P(A∪B)=S and P(A∩B)=0, then which statement is true? A and B are complementary
events.
Given that the worker is a Democrat, what is the probability that the worker has a white collar
job. 0.182
, Which of the following assignments of probabilities to the sample points A, B, and C is valid if A,
B, and C are the only sample points in the experiment? P(A)=0,
P(B)=1/9,
P(C)= 8/9
A bag of colored candies contains 20 red, 25 yellow, and 35 orange candies. An experiment
consists of randomly choosing one candy from the bag and recording its color. What is the
sample space for this experiment? {red, yellow, orange}
If A and B are independent events, then
P(A)=P(BA). False
If x is a binomial random variable, calculate μ for n=41 and p=0.6. 24.6
Find a value of the standard normal random variable z, called z0, such that Pz≤z0=0.7642
0.72
Verified by Experts
__________ is a method of interpreting the standard deviation of data that have a mound-
shaped, symmetric distribution. The Empirical Rule
According to the empirical rule, z-scores of less than -3 or greater than 3 occur very infrequently
for data from a mounded and symmetric distribution True
If a z-score is 0 or near 0, the measurement is located at or near the mean. True
If P(A∪B)=S and P(A∩B)=0, then which statement is true? A and B are complementary
events.
Given that the worker is a Democrat, what is the probability that the worker has a white collar
job. 0.182
, Which of the following assignments of probabilities to the sample points A, B, and C is valid if A,
B, and C are the only sample points in the experiment? P(A)=0,
P(B)=1/9,
P(C)= 8/9
A bag of colored candies contains 20 red, 25 yellow, and 35 orange candies. An experiment
consists of randomly choosing one candy from the bag and recording its color. What is the
sample space for this experiment? {red, yellow, orange}
If A and B are independent events, then
P(A)=P(BA). False
If x is a binomial random variable, calculate μ for n=41 and p=0.6. 24.6
Find a value of the standard normal random variable z, called z0, such that Pz≤z0=0.7642
0.72
