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11 Dec 2024, 09:00
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1: wearing running shoes and wind ≥ 3 m/s
2: wearing running shoes and wind < 3 m/s
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
66% (02:16) correct
34%
(02:20)
wrong
based on 1377
sessions
History
Date
Time
Result
Not Attempted Yet
The track coach at a particular school had her student athletes practice running outside of scheduled training sessions and report details to her. She had them report speed as kilometers run divided by time running, whether they wore running shoes or other athletic shoes, whether they ran on the school track or not, and whether the wind was ≥ 3 meters per second (m/s) or < 3 m/s. She found that, overall, reports of greater than average speeds correlated with reports of both winds < 3 m/s and wearing running shoes. She also found that reports of less than average speeds correlated with reports of both winds ≥ 3 m/s and wearing shoes other than running shoes. The coach hypothesizes that the wind, and not the type of shoes worn, was responsible for the difference in speed.
The hypothesis indicates that the coach would expect speeds associated with reports of 1 to be less than speeds associated with reports of 2
Select for 1 and for 2 the options that create the statement that most accurately reflects the information provided. Make only two selections, one in each column.
The hypothesis indicates that the coach would expect speeds associated with reports of 1 to be less than speeds associated with reports of 2
Select for 1 and for 2 the options that create the statement that most accurately reflects the information provided. Make only two selections, one in each column.
| 1 | 2 | |
| running on the school track and wind < 3 m/s | ||
| wearing shoes other than running shoes and running on the school track | ||
| wearing running shoes and running on the school track | ||
| wearing running shoes and wind < 3 m/s | ||
| wearing running shoes and wind ≥ 3 m/s |
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Official Answer
1: wearing running shoes and wind ≥ 3 m/s
2: wearing running shoes and wind < 3 m/s
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12 Dec 2024, 09:00
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1. We are asked to find 2 statements that best fill in the blanks.
2. They must be comparable in expected speed based on the hypothesis. "The coach hypothesizes that the wind, and not the type of shoes worn, was responsible for the difference in speed." In other words, the wind affects the speed while shoes don't. It is also unknown the effect of where they ran. Based on this and the reports, an increase in wind speed gives a negative relationship with the expected speed.
3. For the two statements to fit, they need to both talk about the wind speed. We are left with:
- running on the school track and wind < 3 m/s
- wearing running shoes and wind < 3 m/s
- wearing running shoes and wind ≥ 3 m/s
4. The statement "running on the school track and wind < 3 m/s" can't be compared with the others because the effect of where they are running is unknown.
5. Using the hypothesis, we arrive with the answer: The hypothesis indicates that the coach would expect speeds associated with reports of wearing running shoes and wind ≥ 3 m/s to be less than speeds associated with reports of wearing running shoes and wind < 3 m/s.
2. They must be comparable in expected speed based on the hypothesis. "The coach hypothesizes that the wind, and not the type of shoes worn, was responsible for the difference in speed." In other words, the wind affects the speed while shoes don't. It is also unknown the effect of where they ran. Based on this and the reports, an increase in wind speed gives a negative relationship with the expected speed.
3. For the two statements to fit, they need to both talk about the wind speed. We are left with:
- running on the school track and wind < 3 m/s
- wearing running shoes and wind < 3 m/s
- wearing running shoes and wind ≥ 3 m/s
4. The statement "running on the school track and wind < 3 m/s" can't be compared with the others because the effect of where they are running is unknown.
5. Using the hypothesis, we arrive with the answer: The hypothesis indicates that the coach would expect speeds associated with reports of wearing running shoes and wind ≥ 3 m/s to be less than speeds associated with reports of wearing running shoes and wind < 3 m/s.
General Discussion
12 Dec 2024, 01:40
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Can someone explain what the problem statement wants from us and how do we answer these?
