A dietitian wishes to see if a person’s cholesterol level will change if the diet is supplemented by a certain mineral. Six randomly selected subjects were pretested, and then they took the mineral supplement for a 6-week period. The results are shown in the table. (Cholesterol level is measured in milligrams per deciliter.) Can it be concluded that the cholesterol level has been changed at α = 0.10? Assume the variable is approximately normally distributed. Subject 1 2 3 4 5 6 Before (x1) 210 235 208 190 172 244 After (x2) 190 170 210 188 173 288 Required Steps: Step 1: Label all given information. Step 2:State the null and alternative hypothesis and identify the claim. Step 3:Verify that the conditions are met to perform the test. Step 4:Sketch the normal distribution and find the critical regions. Step 5:Compute the test statistic. Step 6:Make a decision Step 7:Summarize the results.
A dietitian wishes to see if a person’s cholesterol level will change if the diet is supplemented by a certain mineral. Six randomly selected subjects were pretested, and then they took the mineral supplement for a 6-week period. The results are shown in the table. (Cholesterol level is measured in milligrams per deciliter.) Can it be concluded that the cholesterol level has been changed at α = 0.10? Assume the variable is approximately
| Subject | 1 | 2 | 3 | 4 | 5 | 6 |
| Before (x1) | 210 | 235 | 208 | 190 | 172 | 244 |
| After (x2) | 190 | 170 | 210 | 188 | 173 | 288 |
Required Steps:
Step 1: Label all given information.
Step 2:State the null and alternative hypothesis and identify the claim.
Step 3:Verify that the conditions are met to perform the test.
Step 4:Sketch the normal distribution and find the critical regions.
Step 5:Compute the test statistic.
Step 6:Make a decision
Step 7:Summarize the results.
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