please help me with this question.. in CLEAR Hand writing !!!!!!! Stat215 Lab Ex
ID: 3336270 • Letter: P
Question
please help me with this question.. in CLEAR Hand writing !!!!!!!
Stat215 Lab Exercises 10 CI on mud and Normal Approximation of Binomial Distribution Exercises: 1. A company states that they have a great supplement to reduce people's cholesterol level. One of stat 215 students was asked to study the company's claim. Following is the result of the cholesterol levels before and after eating the supplement. (Hint: d- After - Before and sa-or Sa - T1-1 4 Case Number Before 235 After 245 220 220 225 290 270 250 270 230 260 210 200 205 190 230 210 185 Find the 95 percent for mean difference of cholesterol levels.Explanation / Answer
Using MINITAB
enter data in two different column and go to Stat<<Basic Statistics<<Paired t
Enter these two colums in perticular cell, Choose option menu enter Confidence level = 95.0 and test mean = 0 and Alternative = not equal then click ok we get following output
MTB > Paired 'Before' 'After'.
Paired T-Test and CI: Before, After
Paired T for Before - After
N Mean StDev SE Mean
Before 9 235.0 25.4 8.5
After 9 225.6 33.5 11.2
Difference 9 9.44 24.42 8.14
95% CI for mean difference: (-9.33, 28.22)
T-Test of mean difference = 0 (vs not = 0): T-Value = 1.16 P-Value = 0.279
95% CI for mean difference of Cholesterol levels: (-9.33, 28.22)
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