Don't just perform a hypothesis test and calculate a confidence interval, you need to explain your reasoning using the results of the hypothesis test and confidence interval as to why you decided if the new technique is better.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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New medical techniques continue to be developed and compared to standard medical techniques.  Suppose you are an analyst and you need to decide if a new medical technique results in a shorter hospital stay than the standard technique.  The standard medical technique has an average hospital stay of 3.5 days.  Each of you have been assigned example sample information regarding length of hospital stay regarding the new medical technique listed in the following table.  You need to use the sample information to determine if the new technique is better than the standard technique with regard to the length of hospital stay (Hint: Shorter hospital stay is better).  You need to use results of statistical analysis (hypothesis testing, confidence intervals) to explain, in context, your decision regarding if the new medical technique is better than the standard medical technique.  You will need to decide on a significance level for a hypothesis test and a confidence level for the confidence interval. Sample Mean of Length of Hospital Stay (days): 2.6 Sample Standard Deviation of Length of Hospital Stay (days): 0.8 Sample Size: 138

Don't just perform a hypothesis test and calculate a confidence interval, you need to explain your reasoning using the results of the hypothesis test and confidence interval as to why you decided if the new technique is better.      

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