The data in the following table represent four-week growth rates for depleted chicks at different dosage levels of vitamin B,
Use the information provided in the next table to answer the following questions.
a. Determine the dose-response straight lines separately for each sex, and plot them on the same graph.
b. Test whether the slopes for males and females differ.
c. Find a 99% confidence interval for the true difference between the male and female slopes.
d. Test for coincidence of the two straight lines.
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