55. For two factors-starchy or sugary, and green base leaf or white base leaf-the following counts for the progeny of self-fertilized heterozygotes were observed (Fisher 1958): Type Count Starchy green 1997 Starchy white906 Sugary green Sugary white 904 32 According to genetic theory, the cell probabilities are .25(2 +0), .25(1 - ) .25(1-0), and .250, where θ(0 < θ < 1) is a parameter related to the linkage of the factors. a. Find the mle of θ and its asymptotic variance. Form an approximate 95% confidence interval for θ based on part (a).

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Chapter8: Sequences, Series,and Probability
Section8.7: Probability
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55. For two factors-starchy or sugary, and green base leaf or white base leaf-the
following counts for the progeny of self-fertilized heterozygotes were observed
(Fisher 1958):
Type
Count
Starchy green 1997
Starchy white906
Sugary green
Sugary white
904
32
According to genetic theory, the cell probabilities are .25(2 +0), .25(1 - )
.25(1-0), and .250, where θ(0 < θ < 1) is a parameter related to the linkage
of the factors.
a. Find the mle of θ and its asymptotic variance.
Form an approximate 95% confidence interval for θ based on part (a).
Transcribed Image Text:55. For two factors-starchy or sugary, and green base leaf or white base leaf-the following counts for the progeny of self-fertilized heterozygotes were observed (Fisher 1958): Type Count Starchy green 1997 Starchy white906 Sugary green Sugary white 904 32 According to genetic theory, the cell probabilities are .25(2 +0), .25(1 - ) .25(1-0), and .250, where θ(0 < θ < 1) is a parameter related to the linkage of the factors. a. Find the mle of θ and its asymptotic variance. Form an approximate 95% confidence interval for θ based on part (a).
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