UCF QMB 3200 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2025/2026 A COMPLETE SOLUTION ALL
ANSWERS GET IT 100% CORRECT DETAILED BEST RATED A+
FOR SUCCESS
The average number of hours for a random sample of mail order pharmacists from company A
was 50.1 hours last year. It is believed that changes to medical insurance have led to a
reduction in the average work week. To test the validity of this belief, the hypotheses are -
CORRECT ANSWERS H0:u>50.1, Ha:u<50.1.
Whenever the probability of making a Type II error has not been determined and controlled,
only two conclusions are possible. We either reject H0 or - CORRECT ANSWERS Do not
reject H0.
Applications of hypothesis testing that only control for the Type I error are called - CORRECT
ANSWERS significance tests.
The p-value is a probability that measures the support (or lack of support) for the - CORRECT
ANSWERS null hypothesis.
As the test statistic becomes larger, the p-value - CORRECT ANSWERS becomes smaller.
A news reporter states that the average number of temperature in January has never dropped
below 10 degrees Fahrenheit. You go online to research this claim. The appropriate hypotheses
are - CORRECT ANSWERS H0: u>10, Ha: u<10.
The probability of making a Type I error when the null hypothesis is true as an equality is called
the - CORRECT ANSWERS level of significance.
Which of the following null hypotheses cannot be correct? - CORRECT ANSWERS H0: u
not=10.
,UCF QMB 3200 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2025/2026 A COMPLETE SOLUTION ALL
ANSWERS GET IT 100% CORRECT DETAILED BEST RATED A+
FOR SUCCESS
It has been stated that at least 75 out of every 100 people who go to the movies on Saturday
night buy popcorn. Identify the null and alternative hypotheses. - CORRECT ANSWERS
H0: p>.75, Ha: p<.75.
A fast food restaurant has automatic drink dispensers to help fill orders more quickly. When the
12 ounce button is pressed, they would like for exactly 12 ounces of beverage to be dispensed.
There is, however, undoubtedly some variation in this amount. The company does not want the
machine to systematically over fill or under fill the cups. Which of the following gives the
correct set of hypotheses? - CORRECT ANSWERS H0: u=12, Ha: u not=12
Which of the following describes a Type II Error? - CORRECT ANSWERS Accept H0 when
H0 is false.
Which of the following does not need to be known in order to compute the p-value? -
CORRECT ANSWERS The level of significance.
What is the probability of making a Type I error? - CORRECT ANSWERS 𝛼 alpha.
The p-value - CORRECT ANSWERS must be a number between 0 and 1.
The normal probability distribution can be used to approximate the sampling distribution of as
long as - CORRECT ANSWERS np>5 and n(1-p)>5.
For the case where σ is unknown, which statistic is used to estimate σ? - CORRECT
ANSWERS S
, UCF QMB 3200 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2025/2026 A COMPLETE SOLUTION ALL
ANSWERS GET IT 100% CORRECT DETAILED BEST RATED A+
FOR SUCCESS
For the case where σ is unknown, the test statistic has a t distribution. How many degrees of
freedom does it have? n-1Which of the following describes a Type I Error? - CORRECT
ANSWERS Reject H0 when H0 is true.
The matched sample design often leads to a smaller sampling error than the independent
sample design. The primary reason is that in a matched sample design - CORRECT
ANSWERS variation between subjects is eliminated because the same subjects are used for
both treatments.
Suppose we are constructing an interval estimate for the difference between the means of two
populations when the standard deviations of the two populations are unknown. Suppose it can
be assumed that the two populations have equal variances. If n1 is the size of sample 1 and n2
is the size of sample 2, we must use a t distribution with - CORRECT ANSWERS degrees
of freedom.
A researcher recruits 25 people to participate in a study on alcohol consumption and its
interactions with Tylenol. The 25 participants had to come to a check-in center every day at
7:00 a.m. for one week. They were given various amounts of alcohol. Each day, each participant
would flip a coin to determine if they also took Tylenol with their alcohol. They found that their
BAC was 25% higher on days when they were given Tylenol with their alcohol than when they
drank alcohol alone. This is an example of a(n) - CORRECT ANSWERS matched sample
design.
The standard error of is given by - CORRECT ANSWERS The one that has a root square
covering the entire thing
Which of the following scenarios follows a matched sample design? - CORRECT
ANSWERS A teacher uses a pretest and then a post test with her students to see how much
they have improved.
LATEST UPDATED 2025/2026 A COMPLETE SOLUTION ALL
ANSWERS GET IT 100% CORRECT DETAILED BEST RATED A+
FOR SUCCESS
The average number of hours for a random sample of mail order pharmacists from company A
was 50.1 hours last year. It is believed that changes to medical insurance have led to a
reduction in the average work week. To test the validity of this belief, the hypotheses are -
CORRECT ANSWERS H0:u>50.1, Ha:u<50.1.
Whenever the probability of making a Type II error has not been determined and controlled,
only two conclusions are possible. We either reject H0 or - CORRECT ANSWERS Do not
reject H0.
Applications of hypothesis testing that only control for the Type I error are called - CORRECT
ANSWERS significance tests.
The p-value is a probability that measures the support (or lack of support) for the - CORRECT
ANSWERS null hypothesis.
As the test statistic becomes larger, the p-value - CORRECT ANSWERS becomes smaller.
A news reporter states that the average number of temperature in January has never dropped
below 10 degrees Fahrenheit. You go online to research this claim. The appropriate hypotheses
are - CORRECT ANSWERS H0: u>10, Ha: u<10.
The probability of making a Type I error when the null hypothesis is true as an equality is called
the - CORRECT ANSWERS level of significance.
Which of the following null hypotheses cannot be correct? - CORRECT ANSWERS H0: u
not=10.
,UCF QMB 3200 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2025/2026 A COMPLETE SOLUTION ALL
ANSWERS GET IT 100% CORRECT DETAILED BEST RATED A+
FOR SUCCESS
It has been stated that at least 75 out of every 100 people who go to the movies on Saturday
night buy popcorn. Identify the null and alternative hypotheses. - CORRECT ANSWERS
H0: p>.75, Ha: p<.75.
A fast food restaurant has automatic drink dispensers to help fill orders more quickly. When the
12 ounce button is pressed, they would like for exactly 12 ounces of beverage to be dispensed.
There is, however, undoubtedly some variation in this amount. The company does not want the
machine to systematically over fill or under fill the cups. Which of the following gives the
correct set of hypotheses? - CORRECT ANSWERS H0: u=12, Ha: u not=12
Which of the following describes a Type II Error? - CORRECT ANSWERS Accept H0 when
H0 is false.
Which of the following does not need to be known in order to compute the p-value? -
CORRECT ANSWERS The level of significance.
What is the probability of making a Type I error? - CORRECT ANSWERS 𝛼 alpha.
The p-value - CORRECT ANSWERS must be a number between 0 and 1.
The normal probability distribution can be used to approximate the sampling distribution of as
long as - CORRECT ANSWERS np>5 and n(1-p)>5.
For the case where σ is unknown, which statistic is used to estimate σ? - CORRECT
ANSWERS S
, UCF QMB 3200 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATED 2025/2026 A COMPLETE SOLUTION ALL
ANSWERS GET IT 100% CORRECT DETAILED BEST RATED A+
FOR SUCCESS
For the case where σ is unknown, the test statistic has a t distribution. How many degrees of
freedom does it have? n-1Which of the following describes a Type I Error? - CORRECT
ANSWERS Reject H0 when H0 is true.
The matched sample design often leads to a smaller sampling error than the independent
sample design. The primary reason is that in a matched sample design - CORRECT
ANSWERS variation between subjects is eliminated because the same subjects are used for
both treatments.
Suppose we are constructing an interval estimate for the difference between the means of two
populations when the standard deviations of the two populations are unknown. Suppose it can
be assumed that the two populations have equal variances. If n1 is the size of sample 1 and n2
is the size of sample 2, we must use a t distribution with - CORRECT ANSWERS degrees
of freedom.
A researcher recruits 25 people to participate in a study on alcohol consumption and its
interactions with Tylenol. The 25 participants had to come to a check-in center every day at
7:00 a.m. for one week. They were given various amounts of alcohol. Each day, each participant
would flip a coin to determine if they also took Tylenol with their alcohol. They found that their
BAC was 25% higher on days when they were given Tylenol with their alcohol than when they
drank alcohol alone. This is an example of a(n) - CORRECT ANSWERS matched sample
design.
The standard error of is given by - CORRECT ANSWERS The one that has a root square
covering the entire thing
Which of the following scenarios follows a matched sample design? - CORRECT
ANSWERS A teacher uses a pretest and then a post test with her students to see how much
they have improved.
