Maurice Tutor

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Teaching Since: May 2017
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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 03 Nov 2017 My Price 9.00

Camp Jump

Summer weight-loss camp. Camp Jump Start is an 8-week summer camp for overweight and obese adolescents. Counselors develop a weight-management program for each camper that centers on nutrition education and physical activity. In a study published in Pediatrics (April 2010), the body mass index (BMI) was measured for each of 76 campers both at the start and end of camp. Summary statistics on BMI measurements are shown in the table.

 

 

a. Give the null and alternative hypothesis for determining whether the mean BMI at the end of camp is less than the mean BMI at the start of camp.

 

b. How should the data be analyzed, as an independent-samples t -test or as a paired-difference t -test? Explain.

 

c. Calculate the test statistic using the formula for an independent-samples t-test. (Note: This is not how the test should be conducted.)

 

d. Calculate the test statistic using the formula for a paired-difference t -test.

 

e. Compare the test statistics, parts c and d. Which test statistic provides more evidence in support of the alternative hypothesis?

 

f. The p -value of the test, part d, was reported as p 6 .0001. Interpret this result assuming a = .01.

 

g. Do the differences in BMI values need to be normally distributed in order for the inference, part f, to be valid? Explain.

h. Find a 99% confidence in

Answers

Maurice Tutor
(5)
Status NEW Posted 03 Nov 2017 05:11 PM My Price 9.00

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