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Researchers in a certain medical center are interested in assessing the effect of chronic lecithin use on total blood cholesterol. A sample of ten middle-aged men with hypercholesterolemia had their total blood cholesterol measured prior to and following a six month regimen of lecithin intake. The results for total blood cholesterol (CH) level in mg/dl are as follows: Subject 7 6 1 2 3 4 8 10 Pre CH Post CH 242 247 239 245 233 255 267 239 246 247 234 232 256 223 260 255 238 243 235 221 Assume that the data follows the normal distribution. Using the 0.05 level of significance, test whether the population mean blood cholesterol level changed after prolonged lecithin use. Consider the above data as coming from a two independent populations. Test at 5% level of significance whether the means of blood cholesterol level differs in the Pre CH and Post CH.

Researchers in a certain medical center are interested in assessing the effect of chronic lecithin use on total blood cholesterol. A sample of ten middle-aged men with hypercholesterolemia had their total blood cholesterol measured prior to and following a six month regimen of lecithin intake. The results for total blood cholesterol (CH) level in mg/dl are as follows: Subject 7 6 1 2 3 4 8 10 Pre CH Post CH 242 247 239 245 233 255 267 239 246 247 234 232 256 223 260 255 238 243 235 221 Assume that the data follows the normal distribution. Using the 0.05 level of significance, test whether the population mean blood cholesterol level changed after prolonged lecithin use. Consider the above data as coming from a two independent populations. Test at 5% level of significance whether the means of blood cholesterol level differs in the Pre CH and Post CH.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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PLEASE ANSWER NUMBER 4 AND 5 ONLY. Use number 3 for data reference. Need the answer ASAP.
3. Researchers in a certain medical center are interested in assessing the effect of chronic lecithin use on total blood cholesterol. A sample of ten middle-aged men with hypercholesterolemia had their total blood cholesterol measured prior to and following a six month regimen of lecithinn intake. The results for total blood cholesterol (CH) level in mg/dl are as follows: Subject 7 6 1 2 3 4 8 9 10 245 256 Pre CH 239 233 255 267 239 246 247 242 234 Post CH 232 223 260 255 238 243 235 247 221 Assume that the data follows the normal distribution. Using the 0.05 level of significance, test whether the population mean blood cholesterol level changed after prolonged lecithin use. 4. Consider the above data as coming from a two independent populations. Test at 5% level of significance whether the means of blood cholesterol level differs in the Pre CH and Post CH. 5. Are the results in (3) and (4) different? If yes, what do you think is the reason of its difference? Which of the two tests do think is more appropriate to use? Why? Justify your claim.
Transcribed Image Text:3. Researchers in a certain medical center are interested in assessing the effect of chronic lecithin use on total blood cholesterol. A sample of ten middle-aged men with hypercholesterolemia had their total blood cholesterol measured prior to and following a six month regimen of lecithinn intake. The results for total blood cholesterol (CH) level in mg/dl are as follows: Subject 7 6 1 2 3 4 8 9 10 245 256 Pre CH 239 233 255 267 239 246 247 242 234 Post CH 232 223 260 255 238 243 235 247 221 Assume that the data follows the normal distribution. Using the 0.05 level of significance, test whether the population mean blood cholesterol level changed after prolonged lecithin use. 4. Consider the above data as coming from a two independent populations. Test at 5% level of significance whether the means of blood cholesterol level differs in the Pre CH and Post CH. 5. Are the results in (3) and (4) different? If yes, what do you think is the reason of its difference? Which of the two tests do think is more appropriate to use? Why? Justify your claim.
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