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( c ) What is the chi - square test statistic ? What is the p - value ? What is the conclusion of the test ? chi - square statistic _ p -value =

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( c ) What is the chi - square test statistic ? What is the p - value ? What is the conclusion of the test ?
chi - square statistic _
p -value =
Conclusion :"
*\ Ho .
Does the test indicate an association between these two variables ?"
( d ) For the cell which contributes the most to the chi- square statistic , is the observed count greater than or less than the expected count ?
( e ) Which genotype is most over - represented in sprinters ?
Which genotype is most overrepresented in endurance athletes ?
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L Yang , N., et al . , " ACTIN3 genotype is associated with human elite athletic performance , " American Journal of Human Genetics , 2003; 73: 627 - 631.

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THE GENE ACTNZ encodes & protein that functions in fast- twitch muscles . People can be classified according to which genotype of this gene they Have , RR, RX, Or *x, and Else according to
which genetic allele they have , For*`. The study' described here , examines the association between this gene and different subgroups of the population . All participants in the study' live*
in Australia . THE Earlier Exercises only included the control group .
Testing Genotypes For Fast - Twitch Muscles*
The study on genetics and fast- twitch muscles includes a sample of Elite sprinters , a sample of elite endurance athletes , and a control group of non- athletes . Is there an association
Between genotype classification [RR, RX, or *`` and group ( sprinter , Endurance , control group ) ? Computer output is shown for this chi- square test . In each cell , the top number is the
observed count , the middle number is the Expected count , and the bottom number is the contribution to the chi- square statistic .
RR
RX
Total
XX
Control
130
226
80
136
143. 76
214. 15
78.09
1. 316
0. 655
0. 047
Sprint
5:3
40
6
107
35.2
52.56
19.16
8.901
0. 395
9.043
Endurance
0.9
40
194
6:3.96
95.29
34. 75
0. 246
0. 558
3. 6:45
Total
243
362
132
737
Chi - 59 = 24. 8:05 , DF = 4, P- Value = 0.000
( a); What Is the expected count for sprinters with the RRgenotype ? For this cell , what Is the contribution to the chi- square statistic ?"
Round your answer for the expected count to two decimal places , and your answer for the contribution to the chi- square statistic to three decimal places .
Expected count _
Contribution to the chi- square statistic _^
I'D'; What are the degrees of freedom for the test ?
If =

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