The degree of success at mastering a skill often depends on

The degree of success at mastering a skill often depends on the method used to learn the skill. An article reported on a study involving the following four learning methods: (1) visual contact and imagery, (2) nonvisual contact and imagery, (3) visual contact, and (4) control. There were 20 subjects randomly assigned to each method. The summary information on putting performance score is listed in the following table.

Let ₁, ₂, ₃, and ₄ represent the true performance score for learning methods 1, 2, 3 and 4, respectively. Calculate the corresponding 95% T-K intervals. (Use Table 7 in Appendix A. Give the answers to two decimal places.)

Solution