Question

A university would like to examine the relationship between a faculty​ member's performance rating​ (measured on a scale of​ 1-20) and his or her annual salary increase. The table to the right shows these data for eight randomly selected faculty members. Construct 90% confidence interval for the regression slope.

LCL=

UCL=

Rating	Increase
16	2300
18	2500
11	1700
12	1600
14	2100
15	2600
16	1900
17	1900

Answer 1

The statistical software output for this problem is:

Hence,

90% confidence interval for slope is:

LCL = 1.315

UCL = 188.287