(Biological Data analysis) All work must be done in R programing. Suppose we per

Question

(Biological Data analysis)

All work must be done in R programing.

Suppose we perform an experiment crossing flowers of two genotypes that produce progeny with white flowers (recessive) of assumed proportion ¼ and progeny with purple flowers (dominant) of assumed proportion ¾. Suppose we want to test our assumption (null hypothesis) that these proportions are correct given that we have empirical data from 900 plants, 625 of which have purple flowers, and the remainder (275) have white flowers. Perform the appropriate hypothesis test.

Explanation / Answer

fafter applying chi square goodness of fit on above

for above chi stat 14.81 and 1 degree of freedom ; p value =0.0001

as p value is significantly low we reject null hypothesis; that distribution of flowers is in given proportion

observed Expected Chi square P O E=total*p =(O-E)^2/E white flowers 0.25 275 225.00 11.11 purple flowers 0.75 625 675.00 3.70 900 900 14.81

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