QUESTION 4

QUESTION 4 (5 marks) The coach wants to see whether the type of Tabata workout given to her participants can reduce their weight. He analyzes the weight of participants before joining his class, and after one month, they entered his class of Tabata using SPSS. Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 weight before 74.5625 16 9.17946 2.29487 Weight_after 70.4375 16 10.73293 X Paired Samples Test Paired Differences 95% Condence Interval Std. Std. Error of the Difference Sig. (2- Mean Deviation Mean Lower U er t df tailed Pair weight_before - 4.12500 Y .96986 2.05780 6.19220 4.253 15 .001 1 Weight after a) Find the values of X and Y. (2 marks) b) Find the 95% confident interval for the mean difference. Can you conclude that the type of Tabata workout given by the coach to her participants can reduce the participants' weight? Give a reason to support your answer.