The table below shows a record of the beforenbsp and, Ask an Expert

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The table below shows a record of the "before" and "after" weights (in pounds) of 20 patients enrolled in a clinically-supervised ten-week weight-loss program.

Patient #	1	2	3	4	5	6	7	8	9	10
Before Wt (lbs)	272	319	253	325	236	233	300	260	268	276
After Wt (lbs)	263	313	251	312	227	227	290	251	262	263
Patient #	11	12	13	14	15	16	17	18	19	20
Before Wt (lbs)	215	245	248	364	301	203	197	217	210	223
After Wt (lbs)	206	235	237	350	288	195	193	216	202	214

Let XB represent the "Before" weight and XA the "After" weight.

(i) Using the same bin size for each data set, obtain histograms for the XB and XA data and plot both on the same graph. Strictly on the basis of a visual inspection of these histograms, what can you say about the effectiveness of the weight-loss program in achieving its objective of assisting patients to lose weight?

(ii) De?ne the difference variable, D = XB - XA , and from the given data, obtain and plot a histogram for this variable. Again, strictly from a visual inspection of this histogram, what can you say about the effectiveness of the weight-loss program?

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Accounting Basics, Accounting

Category:- Accounting Basics
Reference No.:- M91710970

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