Answer
The confidence interval for the slope is:
Lower Bound: 0.12038
Upper Bound: 0.24508
Work Step by Step
Using the TI-84 calculator:
1) To enter the data go to 'STAT'. Under the heading 'EDIT' select option 1 'Edit' and enter your x and y values in the L1 and L2 columns, respectively.
2) After you have entered the data, select 'STAT' and go to 'TESTS'. Under 'TESTS', scroll down to and select option G 'LinRegTInt'.
3) Set XList as L1 and YList as L2. Frequency should be set at 1. Set 'C-Level 1' as 0.95. After you have entered these settings, scroll down and select 'Calculate'
4) The results will be displayed in brackets as (0.12038, 0.24508) where 0.12038 is the lower bound and 0.24508 is the upper bound.
