Exhibit 18-3
A company advertises that food preparation time can be significantly reduced with the Handy Dandy Slicer. A sample of 12 individuals prepared the ingredients for a meal with and without the slicer. You are given the preparation times below.
-Refer to Exhibit 18-3. The test statistic equals

Question

Exhibit 18-3
A company advertises that food preparation time can be significantly reduced with the Handy Dandy Slicer. A sample of 12 individuals prepared the ingredients for a meal with and without the slicer. You are given the preparation times below. 
-Refer to Exhibit 18-3. The test statistic equals

Quizplus · Accepted Answer

Using a paired t-test, the test statistic can be calculated as t = -0.889. Since this is a two-tailed test, the critical values can be found using a t-distribution table with 11 degrees of freedom. The critical values are ±2.201. Since |t| < 2.201, we fail to reject the null hypothesis and conclude that there is not enough evidence to support the claim that the slicer significantly reduces preparation time.

Exhibit 18-3 A Company Advertises That Food Preparation Time Can Be Significantly