The Manager of ABC company wants to raise its sales. The record of expenses in developing community awareness as well as Sales show the following data for 10 months:
Month Expenses (in thousands) Sales (in thousands)
Jan 6 19
Feb 8 20
Mar 4 13
Apr 6 22
May 5 14
Jun 9 24
Jul 10 30
Aug 7 15
Sep 8 21
Oct 9 27
Find out the expected sales volume when Expenses in Community Awareness program is 5.5 thousand dollars. Make a 95% confidence interval for estimating the mean sales volume with community awareness program expenditure of 5.5 thousand dollars.