BUS 302L Statistic Exam Questions and
Answers 100% Pass
E - ✔✔1. Which is the following is correct?
a. The probability of a type I error is β.
b. The probability of a type II error is (1 - β).
c. The probability of a type II error is α.
d. The probability of a type I error is (1 - α).
e. none of the above
D - ✔✔3. A manufacturer of contact lenses is studying the curvature of the lenses it
sells. In particular, the last 500 lenses sold had an average curvature of 0.5. The
population is
a. the 500 lenses.
b. 0.5.
c. the lenses sold today.
d. all the lenses sold by the manufacturer.
e. none of the above
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
, A - ✔✔4. According to the empirical rule, the bell or mound shaped distribution will
have approximately 68% of the data within what number of standard deviations of the
mean?
a. one standard deviation
b. two standard deviations
c. three standard deviations
d. four standard deviations
e. none of the above
C - ✔✔5. A random sample of 5 mosquitos is sampled. The number of mosquitos
carrying the West Nile Virus in the sample is an example of which random variable?
a. normal
b. student's t
c. binomial
d. uniform
e. none of the above
A - ✔✔6. A political scientist is studying voters in California. It is appropriate for him to
use a mean to describe
a. the age of a typical voter.
b. the party affiliation of a typical voter.
c. the sex of a typical voter.
d. the county of residence of a typical voter.
e. none of the above
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
Answers 100% Pass
E - ✔✔1. Which is the following is correct?
a. The probability of a type I error is β.
b. The probability of a type II error is (1 - β).
c. The probability of a type II error is α.
d. The probability of a type I error is (1 - α).
e. none of the above
D - ✔✔3. A manufacturer of contact lenses is studying the curvature of the lenses it
sells. In particular, the last 500 lenses sold had an average curvature of 0.5. The
population is
a. the 500 lenses.
b. 0.5.
c. the lenses sold today.
d. all the lenses sold by the manufacturer.
e. none of the above
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
, A - ✔✔4. According to the empirical rule, the bell or mound shaped distribution will
have approximately 68% of the data within what number of standard deviations of the
mean?
a. one standard deviation
b. two standard deviations
c. three standard deviations
d. four standard deviations
e. none of the above
C - ✔✔5. A random sample of 5 mosquitos is sampled. The number of mosquitos
carrying the West Nile Virus in the sample is an example of which random variable?
a. normal
b. student's t
c. binomial
d. uniform
e. none of the above
A - ✔✔6. A political scientist is studying voters in California. It is appropriate for him to
use a mean to describe
a. the age of a typical voter.
b. the party affiliation of a typical voter.
c. the sex of a typical voter.
d. the county of residence of a typical voter.
e. none of the above
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
