You are planning to conduct a 2-sample t-test to determine whether the mean of one normally distributed population is statistically larger than the mean of the second normally distributed population. (In other words, H.: 41 – Hz > 0, so you will be doing a one-tailed test.) For your first sample, the sample size is 7, and you calculate the sample standard deviation to be 4.2. For the second sample, the sample size is 9, and you calculate the sample standard deviation to be 3.8. You do not know the values of either population standard deviation, but you are able to assume that the two population standard deviations are the same. You have already calculated the test statistic, and now you are ready to find the critical value. You want a confidence level of 95%, which has a significance level a = 0.05. What is the critical value for this one-tailed test? 1.746 1.761 O 1.782 1.860

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