CHAPTER 4 DATA SET 2 No Intervention 18 16 17 15 16 14 22 21 7 24 23 19 12 20 23 Intervention 17 15 21 24 12 16 14 25 19 24 21 25 9 9 13 A t-test is used to calculate whether two groups are the same or statistically different from another. This is done by comparing the means of two groups. While there are a couple of different types of t-tests depending on the relationship between the data, for this exercise you will use the independent-sample t-test to determine whether two groups are different. Use the "Chapter 4 Data set 2" sample data from the image above. Calculate an independent samples t-test to compare the data from the two conditions. Regardless of whether you do this by hand or in Excel, report the t-test statistic, and determine whether this value is statistically significant (table B2, one-tailed, alpha 0.05). Be sure to submit a file showing your calculations.

Fig: 1