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**Unformatted text preview: **< ) a l Not Secure— phschoolmom C I m on. 7.31
v 0:. 4.977
on. 24.0 Correct! This is obtained by usingthe formula: )(2 = the sum of [o _ E):
E 4. How many degrees offreedom are there forthese data? 0a. 1
Oh. 2
If 0c. 3
0d. 4 Correct! There are 4 categories minus 1 = 3 degrees of freedom. 5. Compare the chi-square value obtained in Question 3 with the Critical Values Table below
for p= 0.05. Which of the following statements would be true? Degrees of freedom (df) Prahabllitym 1 2 3 4- 5
0.05 3.84 5.99 7.82 9.49 11.1
0.01 6.64 9.21 11.3 13.2 15.1
0.001 10.3 13.3 16.3 18.5 20.5 I o a. Since the calculated value for chi-square is less than 7.82, the results support the hypothesis that the parents are heterozygous for two unlinked traits. O b. Since the calculated value for chi-square is less than 7.32, the results support the
hypothesis that eye color and wings are linked. O c. Since the calculated value for chi-square is less than 7.82, the results are
inconclusive The experiment should be repeated. 0 d. Since the calculated value for chi-square is so large, the variations from the
expected are excessive. The experiment should be repeated. Correct! The expected results are based on obtaining a 9:3:3:1 ratio from two heterozygous
parents. Since the chi-square value is below 7.82. the results are statistically signiﬁcant. Gil-dc You Arum I
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- Fall '17
- Eric Thomas
- Sociology, Degrees Of Freedom, Chi-square distribution, 3 degrees, chi-square value