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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 9 10 Pre CH Post CH 245 255 260 239 247 235 239 234 233 223 267 246 242 232 256 255 238 243 247 221 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.

. 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 9 10 Pre CH Post CH 245 255 260 239 247 235 239 234 233 223 267 246 242 232 256 255 238 243 247 221 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.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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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 Pre CH 239 245 256 233 255 267 239 246 247 242 234 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.
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 Pre CH 239 245 256 233 255 267 239 246 247 242 234 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.
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