Test the claim that the treatment population and the placebo population have different variances at a significance level of α = 0.05. Assume that the populations are normally distributed. n x s Treatment 8 23.55 0.52 Placebo 16 26.81 0.59 Is there sufficient evidence to reject the null hypothesis? A. Yes, because the test statistic fell in the critical region. B. Yes, because the test statistic did not fall in the critical region. C. No, because the test statistic fell in the critical region. D. No, because the test statistic did not fall in the critical region.
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Test the claim that the treatment population and the placebo population have different variances at a significance level of α = 0.05. Assume that the populations are normally distributed. n x s Treatment 8 23.55 0.52 Placebo 16 26.81 0.59 Is there sufficient evidence to reject the null hypothesis? A. Yes, because the test statistic fell in the critical region. B. Yes, because the test statistic did not fall in the critical region. C. No, because the test statistic fell in the critical region. D. No, because the test statistic did not fall in the critical region.
