below is the data

minutes	Rating
3	14
7	13
0	18
5	10
6	13
2	17
9	14
2	19
8	15
4	13

A customer service department asks its customers to rate their over-the-phone service on a scale of 1-20 immediately after their service has been completed. The department then matches each customer's rating, y, with the number of minutes the person waited on hold, x. The accompanying table shows the ratings and number of minutes on hold for 10 randomly selected customers. The regression line for the data is

y=17.04450.5314x,

x=4.6,

x2=288

and

SSE=44.8246.

Construct a 95% confidence interval for the population slope: (a) UCL (b) LCL

(c) What conclusions about customer rating and minutes on hold can be drawn from these results?