FINAL REVIEW
The dean at a university believes that the grade point average varies across freshman,
sophomore, junior, and senior years. She takes a random sample of 25 students from each year
and looks up their grades. The null hypothesis is
. If she is going to use one-way analysis of variance (ANOVA), what will her alternative
hypothesis
be?
Select one:
a. Not all of the means are equal.
b. No two means are equal.
Because there are more than two groups whose means are being compared, she will make the
alternative hypotheses that there are differences in at least some of the means: “Not all of the
means are equal.”
c. All of the means are equal.
d. At least two of the means are equal.
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The correct answer is: Not all of the means are equal.
Question 2
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Which situation involves two statistically independent events?
Select one:
a. a statement being true or false
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https://www.coursehero.com/file/21750119/FINAL-REVIEW-MAT-202/
, b. two cards drawn from the same deck
If two cards are drawn from the same deck, the first card drawn does have If two cards are drawn
from the same deck, the first card drawn does have an effect on what the second card can be.
That is, if the first card drawn is a spade (the probability is 13/52=0.25), there is now a lower
likelihood that the second card drawn is a spade (the likelihood would be 12/51=0.235)
c. fair dice thrown at the same time
d. two friends being selected for the starting basketball team
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The correct answer is: fair dice thrown at the same time
Question 3
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Question text
What is the mode of the values in the table?
Select one:
a. 77.5
This study source was downloaded by 100000836546216 from CourseHero.com on 03-09-2022 08:35:41 GMT -06:00
https://www.coursehero.com/file/21750119/FINAL-REVIEW-MAT-202/
The dean at a university believes that the grade point average varies across freshman,
sophomore, junior, and senior years. She takes a random sample of 25 students from each year
and looks up their grades. The null hypothesis is
. If she is going to use one-way analysis of variance (ANOVA), what will her alternative
hypothesis
be?
Select one:
a. Not all of the means are equal.
b. No two means are equal.
Because there are more than two groups whose means are being compared, she will make the
alternative hypotheses that there are differences in at least some of the means: “Not all of the
means are equal.”
c. All of the means are equal.
d. At least two of the means are equal.
Feedback
The correct answer is: Not all of the means are equal.
Question 2
Complete
Not graded
Flag question
Question text
Which situation involves two statistically independent events?
Select one:
a. a statement being true or false
This study source was downloaded by 100000836546216 from CourseHero.com on 03-09-2022 08:35:41 GMT -06:00
https://www.coursehero.com/file/21750119/FINAL-REVIEW-MAT-202/
, b. two cards drawn from the same deck
If two cards are drawn from the same deck, the first card drawn does have If two cards are drawn
from the same deck, the first card drawn does have an effect on what the second card can be.
That is, if the first card drawn is a spade (the probability is 13/52=0.25), there is now a lower
likelihood that the second card drawn is a spade (the likelihood would be 12/51=0.235)
c. fair dice thrown at the same time
d. two friends being selected for the starting basketball team
Feedback
The correct answer is: fair dice thrown at the same time
Question 3
Complete
Not graded
Flag question
Question text
What is the mode of the values in the table?
Select one:
a. 77.5
This study source was downloaded by 100000836546216 from CourseHero.com on 03-09-2022 08:35:41 GMT -06:00
https://www.coursehero.com/file/21750119/FINAL-REVIEW-MAT-202/
