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In a test of weight loss programs 40 adults used the Atkins weight loss program...

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In a test of weight loss programs 40 adults used the Atkins weight loss program After 12 months their mean weight loss was found to be 2 1 lb with a standard deviation of 4 8 lb Construct a 90 confidence interval estimate of the standard deviation of the weight loss for all such subjects Does the confidence interval give us information about the effectiveness of the diet In the above problem please write out the work for each of the following steps Please note that you do not have to number these steps but your work should correspond with them 1 Read the problem carefully to determine which type of analysis is being performed 2 Identify the parameter being estimated 3 Write down the formula s used 4 Determine the information needed to calculate the confidence interval estimate from the problem 5 Substitute all the values found in step 4 into either o 6 Follow the rounding rules established in week 3 Write a summary sentence 7 Answer any follow up questions 7 1 8 X n 1 xi

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