3. Escobar performed a study to validate a translated version of the Western Ontario and McMaster University index (WOMAC) questionnaire used with Spanish-speaking patient s with hip or knee osteoarthritis. For the 76 women classified with sever hip pain. The WOMAC mean function score was 70.7 with standard deviation of 14.6, we wish to know if we may conclude that the mean function score for a population of similar women subjects with sever hip pain is less than 75. Let a =0.01

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A: Given: n1 = 75 X1 = 6.1 S1 = 1.7 n2 = 75 X2 = 4.3 S2 = 0.9 Sp = 1.10 Formula Used: Sp =…

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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.