4. Problem 22 – Use the data in the following table to perform the significant test: Participants Exercise Group Control Group Mean 16 23 104 16 20 160 a. Does music-based physical training improve balance and walking efficiency? (one-tailed tests, a =.05) Show all 4 steps of hypothesis testing. b. Calculate r to measure effect size for the mean difference.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.