A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects....

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A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of distributions are normal distribution, is there evidence that the treatment is effective?   	 		 			 			 			 			 			Cholesterol Decreased 			 			 			No Cholesterol Decrease 			 			 			Total 			 		 		 			 			Treatment 			 			 			38 			 			 			18 			 			 			56 			 		 		 			 			No treatment 			 			 			30 			 			 			28 			 			 			58 			 		 		 			 			Total 			 			 			68 			 			 			46 			 			 			114 			 		 	   Submit a (2-3 pages) paper before the end of the module that:   	Briefly describe the procedure for testing hypotheses. 	Formulate the null and alternative hypotheses. 	Determine the test statistic that you will use. 	Calculate the p-value. Show your work. 	Discuss whether there is enough evidence to reject the null hypothesis.     I need 2-3 pages, APA, 3-4 references.  
	
Document Preview: Cook, A., Netuveli, G., & Sheikh, A XXXXXXXXXXChapters 5: Study design, Chapter 6: Combining students, Chapter 7: Managing data. In Basic skills in statistics: A guide for healthcare professionals (pp XXXXXXXXXXLondon, GBR: Class Publishing. eISBN: XXXXXXXXXX.Norman, G. R., & Streiner, D. L XXXXXXXXXXSection the second: Analysis of variance. Chapter 7: Comparing two groups. In Biostatistics: The bare essentials [4th ed., e-Book]. Shelton, Connecticut: PMPH-USA, Ltd. eISBN-13: XXXXXXXXXXAvailable in the Trident Online Library EBSCO eBook Collection.Norman, G. R., & Streiner, D. L XXXXXXXXXXSection the third: Regression and correlation. Chapter 13: Simple regression and correlation. In Biostatistics: The bare essentials [4th ed., e-Book]. Shelton, Connecticut: PMPH-USA, Ltd. eISBN-13: XXXXXXXXXXAvailable in the Trident Online Library EBSCO eBook Collection.Norman, G. R., & Streiner, D. L XXXXXXXXXXSection the fourth: Non-parametric statistics. Chapter 21: Tests of significance for categorical frequency data. In Biostatistics: The bare essentials [4th ed., e-Book]. Shelton, Connecticut: PMPH-USA, Ltd. eISBN-13: XXXXXXXXXXAvailable in the Trident Online Library EBSCO eBook Collection.Additional Reading and Resources (Optional)Bozeman Science (2011, November 13). Chi-squared test [video file]. Retrieved from  HYPERLINK "https://www.youtube.com/watch?v=WXPBoFDqNVk" 	 "_blank" http://www.youtube.com/watch?v=WXPBoFDqNVkCalvert, J XXXXXXXXXXby 2 contingency tables. Retrieved from  HYPERLINK "http://mysite.du.edu/~jcalvert/econ/twobytwo.htm" 	 "_blank" http://mysite.du.edu/~jcalvert/econ/twobytwo.htmMcDonald, J XXXXXXXXXXChi-square test for goodness-of-fit. In Handbook of biological statistics [2nd ed.]. Sparky House Publishing: Baltimore, Maryland. Retrieved from  HYPERLINK "http://www.biostathandbook.com/chigof.html" 	 "_blank" http://www.biostathandbook.com/chigof.htmlMcDonald, J XXXXXXXXXXChi-square test of independence. In...

David · Accepted Answer

Analysis 
Requirements of chi square test of independence are given below. 
 Method of simple random sampling is used 
 data is normally distributed 
 variable is measured on nominal scale of measurement 
 expected value of each of cell is at least 5 
All above requirements are met and hence it is reasonable to apply chi square test of 
independence. Data is given below. 
 Cholesterol decreased No cholesterol decrease total 
treatment 38 18 56 
No treatment 30 28 58 
total 68 46 114
1) Since this test used more of the categorical variables, I will be using chi- square test 
which is independent.

A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of distributions are normal distribution, is there evidence that the treatment is...

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	Cholesterol Decreased	No Cholesterol Decrease	Total
Treatment	38	18	56
No treatment	30	28	58
Total	68	46	114