What is the outlier for the data set?
hours of tv watched
on saturdays
x
x x
x x x
x x x x

4 5 6 9 7 8
1. 4
2. 5.5
3. 9
4. there is none

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.