A cancer researcher is interested in the effect of certain drugs on the growth rate of cancer cells. She grows 24 cultures of cancer cells and randomly divides them into four groups of 6 cultures each. Then she injects the cultures of each group with a different drug and counts the number of cells per square millimeter after 7 days. The following data are the results.
a. Use one-way ANOVA to determine if any of the drugs has an effect ( a = 0.05).
b. Use the HSD test to compare the 4 drugs ( a = 0.05).

Question

A cancer researcher is interested in the effect of certain drugs on the growth rate of cancer cells. She grows 24 cultures of cancer cells and randomly divides them into four groups of 6 cultures each. Then she injects the cultures of each group with a different drug and counts the number of cells per square millimeter after 7 days. The following data are the results. 
a. Use one-way ANOVA to determine if any of the drugs has an effect ( a = 0.05). 
b. Use the HSD test to compare the 4 drugs ( a = 0.05).

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The Answer of A cancer researcher is interested in the effect of certain drugs on the growth rate of cancer cells. She grows 24 cultures of cancer cells and randomly divides them into four groups of 6 cultures each. Then she injects the cultures of each group with a different drug and counts the number of cells per square millimeter after 7 days. The following data are the results. 
a. Use one-way ANOVA to determine if any of the drugs has an effect ( a = 0.05). 
b. Use the HSD test to compare the 4 drugs ( a = 0.05).

A Cancer Researcher Is Interested in the Effect of Certain