between two population means CHALLENGE ACTIVITY 6.4.1: Hypothesis test for the difference between two population means. 361666.1905872.qx3zqy7 Jump to level 1 A clinical researcher performs a clinical trial on 9 patients to determine whether a drug treatment has an effect on serum glucose. The sample mean glucose of the patients before and after the treatment are summarized in the following table. The sample standard deviation of the differences was 10. Sample mean glucose (mg/dL) Before treatment 100 After treatment 92 What type of hypothesis test should be performed? |Select What is the test statistic? Ex: 0.123 What is the number of degrees of freedom? Ex: 25 Does sufficient evidence exist to support the claim that the drug treatment has an effect on serum glucose at the o - 0.01 significance level? Select