Sex ratios and birth order in geese. Is sex detemination truly a random process? The laws of genetics would suggest so because of the random distribution of X and Y chromosomes among spem cells. However, physiological or environmental factors could favor one gender over the other under specific circumstances. A field biologist surveyed a random sample of lesser snow geese nests containing exactly four eggs. For each egg resulting in a live gosling, the laying order and the gender of the gosling were recorded, Here are the data: Observed Order in Which Egg is Laid Sex Total 1. 3 4 Male Female 17 10 27 16 9 25 7. 17 24 45 14 50 a) Are the conditions for a chi-square goodness-of-fit test satisfied? 19 95 Explanation Expected Order in Which Egg is Laid 2 Sex Total e random sampling, the variable under study is categorical and also the expected value of the number sample obseravt b) What are the null and altemative hypotheses for this test? 12.79 14.21 11.84 11.37 12.63 9.00 45 50 95 Male 10.00 19 Female 13.16 Null Hypothesis Altemative Hypothesis 27 25 24 Observed vs. Expected Order in Which Egg is Laid 2 c) What are the expected counts under the null hypothesis? (Fill out Chart on the Right) Sex d) What are the calculated Chi-Square Stats Observed vs. Expected Variances by Sex? (Fill Out Chart on Right) 1 3 4. Male 1.78 1.39 1.25 1.46 1.31 1.68 e) What are the degrees of freedom for this test? Female 1.51 1.60 Degrees of Freedom f) What is the Chi-Square Statistic for this Test? Chi-Square 0.007455086. Hint: This is the Formula Results that Tell us which observation deviates the futherest from Expected g) Is there evidence of a relationship between sex and laying order in lesser snow geese? Explanation
Sex ratios and birth order in geese. Is sex detemination truly a random process? The laws of genetics would suggest so because of the random distribution of X and Y chromosomes among spem cells. However, physiological or environmental factors could favor one gender over the other under specific circumstances. A field biologist surveyed a random sample of lesser snow geese nests containing exactly four eggs. For each egg resulting in a live gosling, the laying order and the gender of the gosling were recorded, Here are the data: Observed Order in Which Egg is Laid Sex Total 1. 3 4 Male Female 17 10 27 16 9 25 7. 17 24 45 14 50 a) Are the conditions for a chi-square goodness-of-fit test satisfied? 19 95 Explanation Expected Order in Which Egg is Laid 2 Sex Total e random sampling, the variable under study is categorical and also the expected value of the number sample obseravt b) What are the null and altemative hypotheses for this test? 12.79 14.21 11.84 11.37 12.63 9.00 45 50 95 Male 10.00 19 Female 13.16 Null Hypothesis Altemative Hypothesis 27 25 24 Observed vs. Expected Order in Which Egg is Laid 2 c) What are the expected counts under the null hypothesis? (Fill out Chart on the Right) Sex d) What are the calculated Chi-Square Stats Observed vs. Expected Variances by Sex? (Fill Out Chart on Right) 1 3 4. Male 1.78 1.39 1.25 1.46 1.31 1.68 e) What are the degrees of freedom for this test? Female 1.51 1.60 Degrees of Freedom f) What is the Chi-Square Statistic for this Test? Chi-Square 0.007455086. Hint: This is the Formula Results that Tell us which observation deviates the futherest from Expected g) Is there evidence of a relationship between sex and laying order in lesser snow geese? Explanation
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Sex ratios and birth order in geese. Is sex determination truly a random process? The laws of genetics would suggest so because
of the random distribution of X and Y chromosomes among spem cells. However, physiological or environmental factors could
favor one gender over the other under specific circumstances. A field biologist surveyed a random sample of lesser snow geese
nests containing exactly foureggs. For each egg resulting in a live gosling, the laying order and the gender of the gosling were
recorded. Here are the data:
Observed
Order in Which Egg is Lald
3
Sex
Total
1
17
10
27
16
6.
25
7.
17
24
5.
14
19
45
50
95
Male
Female
a) Are the conditions for a chi-square goodness-of-fit test satisfied?
Explanation
Expected
Order in Which Egg is Laid
Sex
Total
e random sampling, the varlable under study is categorical and also the expected value of the number sample obseravt
2.
3
9.00
10.00
19
45
50
b) What are the null and altemative hypotheses for this test?
Male
Female
11.37
12.63
24
12.79
11.84
14.21
13.16
Null Hypothesis
Alternative Hypothesis
27
25
95
Observed vs. Expected
Order in Which Egg is Lald
3
c) What are the expected counts under the null hypothesis? (Fill out Chart on the Right)
Sex
d) What are the calculated Chi-Square Stats Observed vs. Expected Variances by Sex? (Fill Out Chart on Right)
1
2.
4.
Male
Female
1.68
1.51
1.78
1.60
e) What are the degrees of freedom for this test?
1.39
1.46
1.25
1.31
Degrees of Freedom
3
) What is the Chi-Square Statistic for this Test?
Chi-Square
0.007455086
Hint: This is the Formula Results that Tell us which observation deviates the futherest from Expected
a) Is there evidence of a relationship between sex and laying order in lesser snow geese?
Explanation
Ch 19
Ch 20
Ch 21
Ch 22
Ch 24
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