A study was conducted that investigated the gene ACTN3, which encodes a protein that functions in fast-twitch muscle fibres. People can be classified according to which genotype of this gene they have, RR, RX or XX. The study included a sample of elite sprinters and a sample of endurance athletes. The researchers are investigating whether there is an association between the genotype classification and the type of athlete (sprinters or endurance). Observed counts XX RX RR Total Endurance 55 49 30 134 Sprinters 49 95 50 194 Total 104 144 80 328 What degrees of freedom should be used for this test? Explain in one or two sentences how you calculated your answer.
A study was conducted that investigated the gene ACTN3, which encodes a protein that functions in fast-twitch muscle fibres. People can be classified according to which genotype of this gene they have, RR, RX or XX. The study included a sample of elite sprinters and a sample of endurance athletes. The researchers are investigating whether there is an association between the genotype classification and the type of athlete (sprinters or endurance). Observed counts XX RX RR Total Endurance 55 49 30 134 Sprinters 49 95 50 194 Total 104 144 80 328 What degrees of freedom should be used for this test? Explain in one or two sentences how you calculated your answer.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
Related questions
Question
A study was conducted that investigated the gene ACTN3, which encodes a protein that
Observed counts |
XX |
RX |
RR |
Total |
Endurance |
55 |
49 |
30 |
134 |
Sprinters |
49 |
95 |
50 |
194 |
Total |
104 |
144 |
80 |
328 |
What degrees of freedom should be used for this test? Explain in one or two sentences how you calculated your answer.
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