MATH 216T Quantitative Reasoning II Week 5 Exam University of Phoenix 2024/2025/MATH 216T Quantitative Reasoning II Week 5 Exam University of Phoenix 2024/2025
An article reports that men over 6 feet tall earn more than men under 6 feet,
with these numbers: average 6 foot plus male’s salary $55,000, average male’s
salary under 6 foot tall of $47,000, with a p-value of 0.45. Based on that reported
p-value, and using the common definition of "statistical significance," which is
the case?
1. Incorrect: The salary differences are not statistically
significant.
2. The salary differences are statistically significant.
3. With that p value, the differences are very close, but not
statistically significant.
4. With that p value, the results are not significant. Correct answer
2. Question 2
A medication states that the odds of having an allergic reaction are 2 in 200.
What is that probability states as a percent?
1. 2%
2. 5%
3. 4%
4. 1%Correct answer
3. Question 3
Using a standard six-sided die, Janice rolled either a 2 or a 5on the last 6 rolls of
the die. What is the probability of Janice rolling a 2or a 5 on her 7th toss of the
die?
1. 1/7
2. 1/6
3. 1/3Correct answer
4. 2/7
4. Question 4
In any given year, a factory has a 10% probability of having a serious accident.
About every how many years might the factory expect to have an accident?
, 1. About every 15 years
2. About every 10 years Correct answer
3. About every year
4. Incorrect: About every 5 years
5. Question 5
Database A contains 40 data items and is made up with an equal number of the
values of 0 and 100 and has a mean of 50. Database B also has 40 entries made
up equally of the values 49 and51 and also has a mean of 50. Which database
will have the smaller value for its standard deviation?
1. B Correct answer
2. A
3. Not enough information provided to answer.
4. They will have the same standard deviation.
6. Question 6
Both sets of values have an average of 13. Is Set A's standard deviation smaller,
larger, or about the same as Set B's?
(Note: This question can be answered by knowing the concept of standard
deviation, without actually computing the standard deviation).
Set A: 1 2 3 23 24 25
Set B: 9 10 11 14 16 18
1. About the same
2. Not enough information provided to tell
3. Smaller
4. Larger Correct answer
7. Question 7
What is the average of the following numbers?
2, 5, 8, 1
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