Question

The following data are from matched samples taken from two populations Population Element 10 15 14 15 4 13 a. Compute the difference value for each element (difference between element of population 1 and population 2 and enter negative values as negative numbers) Element Difference Value b. Compute d (to 3 decimals) c. Compute the standard deviation sd (to 3 decimals) d. What is the point estimate of the difference between the two population means (to 3 decimals)? e. Provide a 95% confidence interval for the difference between the two population means (to 3 decimals and enter negative values as negative numbers)

Answer 1

a)

difference(d)=x1-x2
1
0
1
-9
-2
-5
-6

b)

dbar=-2.857

c)sd =3.891

d)point estimate of difference =-2.857

e) 95% CI =-6.456 ;0.742