A store manager wishes to find out whether there is relationship between the age of her employees and number of sick days they take each year. Using Sest=1.972, find the 98% prediction interval when x=47.
The equation of the regression line is y'=17.047 - 0.171x
Age X: 21, 27, 43, 49, 55, 64
Days Y: 11, 14, 12, 9, 7, 5
One can be 98% confident that the interval _____