MTH/216T: Quantitative Reasoning II Week 5 Final Exam
Question 1
What is the average?
3458
1.
2
2.
4
3.
5
4.
10
2.
Question 2
What is the median of these figure skating ratings?
6.0 6.0 7.0 7.0 7.0 8.0 9.0
1.
6.0
2.
7.0
3.
7.1
4.
8.0
3.
Question 3
Two owners of a cattle ranch, Jo and Val, want to find the average weight for the ranch’s
200 cows. Instead of weighing all of the cows:
Jo weighs 25 cows and gets an average weight of 1,350 pounds (stdev 50)
Val weighs 100 cows and gets an average weight of 1,420 pounds (stdev 50)
What is Jo’s margin of error, rounded to the nearest whole number? (The formula is
)
1.
10
2.
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, 20
3.
50
4.
529
4.
Question 4
A media personality argues that global temperatures are not rising, because every year
an increase is reported such as 0.08 degrees C. The difference from the previous year is
less than the margin of error of about 0.15 degrees C, so that difference should be
ignored. What is a strong counterargument?
1.
Even 0.08 degrees is a lot and thus should be considered.
2.
The margin of error is just extra information and thus can be ignored.
3.
The difference with any previous decade is much greater than the margin of error.
4.
0.15 - 0.08 is 0.07, which is still an increase and thus should be considered.
5.
Question 5
An article reports that blue eyed people earn less than brown eyed people, with these
numbers: average blue-eyed salary $35,000, average brown-eyed salary $37,000, p-
value 0.45. Based on that reported p-value, and using the common definition of
"statistical significance," which is the case?
1.
The results are nowhere near to being statistically significant.
2.
The results are almost but not quite statistically significant.
3.
The results are just barely statistically significant.
4.
The results are strongly statistically significant.
6.
Question 6
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10
people's names into a hat. The first name drawn becomes chair. The second name
drawn becomes vice-chair. How many possible combinations of chair and vice-chair are
there?
This study source was downloaded by 100000817935606 from CourseHero.com on 02-21-2022 07:27:02 GMT -06:00
https://www.coursehero.com/file/62068822/MTH216T-Quantitative-Reasoning-II-Week-5-Final-Examdocx/
Question 1
What is the average?
3458
1.
2
2.
4
3.
5
4.
10
2.
Question 2
What is the median of these figure skating ratings?
6.0 6.0 7.0 7.0 7.0 8.0 9.0
1.
6.0
2.
7.0
3.
7.1
4.
8.0
3.
Question 3
Two owners of a cattle ranch, Jo and Val, want to find the average weight for the ranch’s
200 cows. Instead of weighing all of the cows:
Jo weighs 25 cows and gets an average weight of 1,350 pounds (stdev 50)
Val weighs 100 cows and gets an average weight of 1,420 pounds (stdev 50)
What is Jo’s margin of error, rounded to the nearest whole number? (The formula is
)
1.
10
2.
This study source was downloaded by 100000817935606 from CourseHero.com on 02-21-2022 07:27:02 GMT -06:00
https://www.coursehero.com/file/62068822/MTH216T-Quantitative-Reasoning-II-Week-5-Final-Examdocx/
, 20
3.
50
4.
529
4.
Question 4
A media personality argues that global temperatures are not rising, because every year
an increase is reported such as 0.08 degrees C. The difference from the previous year is
less than the margin of error of about 0.15 degrees C, so that difference should be
ignored. What is a strong counterargument?
1.
Even 0.08 degrees is a lot and thus should be considered.
2.
The margin of error is just extra information and thus can be ignored.
3.
The difference with any previous decade is much greater than the margin of error.
4.
0.15 - 0.08 is 0.07, which is still an increase and thus should be considered.
5.
Question 5
An article reports that blue eyed people earn less than brown eyed people, with these
numbers: average blue-eyed salary $35,000, average brown-eyed salary $37,000, p-
value 0.45. Based on that reported p-value, and using the common definition of
"statistical significance," which is the case?
1.
The results are nowhere near to being statistically significant.
2.
The results are almost but not quite statistically significant.
3.
The results are just barely statistically significant.
4.
The results are strongly statistically significant.
6.
Question 6
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10
people's names into a hat. The first name drawn becomes chair. The second name
drawn becomes vice-chair. How many possible combinations of chair and vice-chair are
there?
This study source was downloaded by 100000817935606 from CourseHero.com on 02-21-2022 07:27:02 GMT -06:00
https://www.coursehero.com/file/62068822/MTH216T-Quantitative-Reasoning-II-Week-5-Final-Examdocx/
