# Question 2 8 8 points refer to the weight watchers

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Question 2 points Refer to the Weight Watchers file here: Weight Watchers.xlsx Use Excel to test. For each paired difference, compute After – Before. In Data Analysis, t-Test: Paired Two Sample for means, select the After data for Variable 1 Range. Note that the critical value output by Data Analysis for this test is always positive. In this problem, the sign of the critical value is negative corresponding to a 1-tailed test with lower reject region and negative lower critical value. What is the t-statistic (t-score)? 8 / 8 -9.321
9.321 -7.087 7.087
Question 3 8 / 8 points Refer to the Weight Watchers file here: Weight Watchers.xlsx Use Excel to test. For each paired difference, compute After – Before. In Data Analysis, t-Test: Paired Two Sample for means, select the After data for Variable 1 Range. Note that the critical value output by Data Analysis for this test is always positive. In this problem, the sign of the critical value is negative corresponding to a 1-tailed test with lower reject region and negative lower critical value. What is the critical t-value?
Question 4 8 / 8 points Refer to the Weight Watchers file here: Weight Watchers.xlsx Use Excel to test. For each paired difference, compute After – Before. In Data Analysis, t-Test: Paired Two Sample for means, select the After data for Variable 1 Range. Note that the critical value output by Data Analysis for this test is always positive. In this problem, the sign of the critical value is negative corresponding to a 1-tailed test with lower reject region and negative lower critical value.