Question

Below are the results of a second experiment where mice were given a higher dose of radiation and given either Streptomycin to prevent a resulting bacterial infection or a saline solution as a control. Survival after 10 days is reported below. Test the hypotheses that survival rates are equal for the four groups, with an α = 0.01. Which test would be most appropriate? Provide critical value and calculated test statistic, and then state your conclusion.

	Streptomycin	Control
Died	44	89
Survived	76	31

Answer 1