The following data are from matvhed samples taken fro two po

The following data are from matvhed samples taken fro two populations

ELEMENT 1 2

1 11 8

2 7 8

3 9 6

4 12 7

5 13 10

6 15 15

7 15 14

A. Compute the difference value for each element.

B. Compute dbar

C. Compute the standard deviation (S_d)

D. What is the point estimate of the difference between the two population means?

E. Provide a 95% confidence interval for the difference between the two population means.

Solution

Feel free to ask if you have any queries.

1.) Difference Value is [ 3    -1     3     5     3     0     1]

2.) dbar = 2

3.)Standard Deviation is 2.0817

4) Best Point Estimate is dbar = 2

5) 95% CI is [mean- 1.96*std/root(n) to mean+1.96*std/root(n)]

= [0.4579 3.5421]