1. A study of sterility in the fruit fly reports the following data on the number...

1. A study of sterility in the fruit fly reports the following data on the number of ovaries developed by each female fly in a sample of size 1386. One model for unilateral sterility states that each ovary develops with some probability p independently of the other ovary. Test the fit of this model using χ². (Use α = 0.05.)

x= Number of Ovaries Developed	0	1	2
Observed Count	1211	116	59

Calculate the test statistic (Round your answer to two decimal places

2. The accompanying data refers to leaf marks found on white clover samples selected from both long-grass areas and short-grass areas. Use a χ² test to decide whether the true proportions of different marks are identical for the two types of regions. (Use α = 0.01.)

Type of Mark

	L	LL	Y+YL	O	Others	Sample Size
Long grass areas	402	11	22	7	277	719
Short grass areas	519	4	14	220	768

Calculate the test statistic (Round your answer to two decimal places)

Expert Solution

orchestra answered 2 years ago

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