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Problem: Two researchers are studying the effect of diet on the occurrence of polyps in the colon.
Researcher A hypothesizes that eating more berries will reduce the number of polyps seen in a colonoscopy. She takes a sample of 100 subjects who are scheduled to have colonoscopy and asks them to keep a "diet diary" the week before the colonoscopy. After the procedure is completed, she finds that there is a significant relationship between berry consumption and the number of polyps with a p-value of 0.03.
Researcher B hypothesizes that there is likely to be some foods that will reduce the number of polyps seen in a colonoscopy. She takes a sample of 100 subjects who are scheduled to have colonoscopy and asks them to keep a "diet diary" the week before the colonoscopy. After the procedure is completed, she examines all 218 different foods in the diaries and finds that there is a significant relationship between broccoli consumption and the number of polyps with a p-value of 0.02.
Which researcher has stronger evidence for the food they say is related to colon polyp reduction?
Group of answer choices
Researcher A since she only studied berries
Researcher B since she studied more foods
Researcher B since she got a slightly lower p-value
Given the following observations in a two-way classification with a = 3, b = 4, and c = 2, compute the F-statistics used to test that all interactions are equal to zero (Y u = 0), all column means are equal (/Jj = 0), and all row means are equal (a:;..
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listed below are the playing times in seconds of songs that were popular at the time of this writing. find the amean
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a piston cylinder compressor is available for evaluation. the device has an initial volume at the beginning of
A new business school graduate who has just joined the firm questions the research manager further, and they agree that the population proportion is no more than 0.3. If interviews cost $10 each, how much money has the new graduate just saved the ..
Write a short explanation of the meaning of the confidence level based on the four possible selections available in the Confidence Interval applet.
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