Advanced Placement (AP), 05.05.2020 02:47, raiindrxp
Researchers are investigating whether people who exercise with a training partner have a greater increase, on average, in targeted exercise intensity compared with people who exercise alone. Two methods of collecting data have been proposed.
Method I: Recruit volunteers who are willing to participate. Randomly assign each participant to exercise with a training partner or to exercise alone.
Method II: Select a random sample of people from all the people who exercise at a community fitness center. Ask each person in the sample whether they use a training partner, and use the response to create the two groups.
Suppose the investigation produces a result that is statistically significant using both methods. What can be concluded if method I is used that cannot be concluded if method II is used? Explain your answer.
Answers: 2
Advanced Placement (AP), 21.06.2019 19:30, skaterwolf1317
Suppose you are going to roll a fair 6 sided die 10 times and record p- hat, the proportion of times that 1 or a 2 is showing. questions: 1) what is the standard deviation of the sampling distribution of p-hat? interpret this value. 2) describe the sampling distribution of p-hat. justify your answer.
Answers: 1
Advanced Placement (AP), 23.06.2019 20:00, khollier3119
Select the statement that is not true about the hubble telescope: a. it orbits above the earth, avoiding the light distortion caused by our atmosphere. b. it is mounted high on a hawaiian mountaintop to provide stable images. c. it has allowed scientists to see the formation of far-away stars and solar systems, leadin some certainty about the history of our own solar system. d. it has documented the destruction of far-away stars and galaxies, leading to some certa the theories of the life cycles of stars.
Answers: 1
Advanced Placement (AP), 24.06.2019 03:00, khoadominh2206
William poole believes economics should be taught in schools because students will learn
Answers: 1
Researchers are investigating whether people who exercise with a training partner have a greater inc...
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