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BSNS 112 FINAL EXAM LATEST 2026 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
Which of the following statements is/are true of stratified random
sampling?
A) You often do not need a sampling frame.
B) For the same sample size, parameter estimates are usually
more accurate than for simple random sampling.
C)Sampling costs are often less than for simple random sampling.
D) Sampling units within Strata should be less homogeneous than
the general population in order for estimates to be more precise
than that achieved by simple random sampling.
E)Both B and D. - ANSWER-B) For the same sample size,
parameter estimates are usually more accurate than for simple
random
Which of the following best describes the power of a test?
A) The probability that your estimate captures the correct value.
B)The probability of rejecting the null when the null is in fact false.
C) The number of standard errors required to reject the null.
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D)The probability of obtaining a test statistic at least as extreme
as the reported value.
E)The probability of rejecting the null when the null is in fact -
ANSWER-B)The probability of rejecting the null when the null is in
fact false.
Which of the following conditions should hold for the results of this
hypothesis test to be valid?
(a) The distribution of visiting frequencies should be
approximately normally distributed orthe sample must be bigger
than 30.
(b) The expected number of successes (np) and the expected
number of failures (nq) must be
five or more.
(c) The data are a random sample.
(d) All of (a), (b) and (c).
(e) Both (b) and (c). - ANSWER-(e) Both (b) and (c).
You have been asked to carry out a test to see if there is a
significant difference in market spending between female students
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who visit the market regularly and female students who do not
visit the market regularly. There are 25 female students who are
regular market visitors and 53 female students who are not
regular visitors in the sample. The sample distributions of market
spending are highly skewed to the right. Which of the following
tests would be the most
appropriate?
(a) An independent samples t-test because the total sample size
is over 30 and according to the central limit theorem the
difference in sample means will be normally distributed
regardless of the distribution of market spending.
(b) A dependent samples t-test because the samples are not
independent.
(c) A non-parametric test because the difference in the sample
means will not be
approximately normally distributed. - ANSWER-(d) A non-
parametric test because the difference in the sample means will
not be
approximately normally distributed.
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how do you find the expected number? - ANSWER-row total x
column total/ grand total
A normally distributed population will be:
a. Symmetric
b. Skewed positively
c. Skewed negatively
d. Have a standard deviation that is similar to the kurtosis -
ANSWER-a. Symmetric
We want divide the population into mothers and non-mothers and
pick 30 people from each group. What sampling method should
we use?
a. Simple Random Sampling
b. Systematic Random Sampling
c. Stratified Random Sampling
d. Cluster Sampling - ANSWER-c. Stratified Random Sampling
What is a Coverage Error?
BSNS 112 FINAL EXAM LATEST 2026 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
Which of the following statements is/are true of stratified random
sampling?
A) You often do not need a sampling frame.
B) For the same sample size, parameter estimates are usually
more accurate than for simple random sampling.
C)Sampling costs are often less than for simple random sampling.
D) Sampling units within Strata should be less homogeneous than
the general population in order for estimates to be more precise
than that achieved by simple random sampling.
E)Both B and D. - ANSWER-B) For the same sample size,
parameter estimates are usually more accurate than for simple
random
Which of the following best describes the power of a test?
A) The probability that your estimate captures the correct value.
B)The probability of rejecting the null when the null is in fact false.
C) The number of standard errors required to reject the null.
,2|Page
D)The probability of obtaining a test statistic at least as extreme
as the reported value.
E)The probability of rejecting the null when the null is in fact -
ANSWER-B)The probability of rejecting the null when the null is in
fact false.
Which of the following conditions should hold for the results of this
hypothesis test to be valid?
(a) The distribution of visiting frequencies should be
approximately normally distributed orthe sample must be bigger
than 30.
(b) The expected number of successes (np) and the expected
number of failures (nq) must be
five or more.
(c) The data are a random sample.
(d) All of (a), (b) and (c).
(e) Both (b) and (c). - ANSWER-(e) Both (b) and (c).
You have been asked to carry out a test to see if there is a
significant difference in market spending between female students
,3|Page
who visit the market regularly and female students who do not
visit the market regularly. There are 25 female students who are
regular market visitors and 53 female students who are not
regular visitors in the sample. The sample distributions of market
spending are highly skewed to the right. Which of the following
tests would be the most
appropriate?
(a) An independent samples t-test because the total sample size
is over 30 and according to the central limit theorem the
difference in sample means will be normally distributed
regardless of the distribution of market spending.
(b) A dependent samples t-test because the samples are not
independent.
(c) A non-parametric test because the difference in the sample
means will not be
approximately normally distributed. - ANSWER-(d) A non-
parametric test because the difference in the sample means will
not be
approximately normally distributed.
, 4|Page
how do you find the expected number? - ANSWER-row total x
column total/ grand total
A normally distributed population will be:
a. Symmetric
b. Skewed positively
c. Skewed negatively
d. Have a standard deviation that is similar to the kurtosis -
ANSWER-a. Symmetric
We want divide the population into mothers and non-mothers and
pick 30 people from each group. What sampling method should
we use?
a. Simple Random Sampling
b. Systematic Random Sampling
c. Stratified Random Sampling
d. Cluster Sampling - ANSWER-c. Stratified Random Sampling
What is a Coverage Error?
