A genetic experiment is undertaken to study the competition between two types of female flies (Drosophihz melanogaster) in cages with one male genotype acting as a substrate. The independent variable x is the time spent in cages, and the dependent variable y is the ratio of the numbers of type 1 to type 2 females. The following data (courtesy of C. Denniston) are recorded.
(a) Plot the scatter diagram of y versus x and determine if a linear model of relation is appropriate.
(b) Determine if a linear relation is plausible for the transformed data y€² = log10y.
(c) Fit a straight line regression to the transformed data.

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Time X No.Type 1 No.Type 2 y= (days) No. Type l 137 278 No, Type 2 17 31 45 59 73 586 479 167 227 75 23 58 1.98 3.39 13.01 331 769 976