(1) The same car company wanted to know the tread wear on tires. Therefore, elev
ID: 3178433 • Letter: #
Question
(1) The same car company wanted to know the tread wear on tires. Therefore, eleven tires were each measured for tread wear by two methods, one based on weight and the other on groove wear. Here are the data in thousands of kms: What test will you use? Explain why did you chose to use either paired or unpaired.
(2)A group of scientists were interested to see if drug A has any effect on the growth of pathogenic S. aureus. They performed an experiment in triplicate with and without drug A.
S. aureus was grown in two independent flasks containing 100 mL media overnight. In the morning, 1 mL of media containing S. aureus was added in independent flasks containing 100 mL media where one flask had drug A and the other had no drug. The growth profile was monitored by measuring the optical density at OD600. What test will you use? Explain why did you chose to use either paired or unpaired.
For number 1 I think it's paired, but for number 2 I'm not sure.
Explanation / Answer
1) as 1 is paired as both the expermient is being done on same subjects
2) it is unpaired as both experiment is being done on different subject as one sample has been put in flask with drug and one without it.
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