The following data represent the age of the mother and the incidence rate of Down syndrom per 1000 prenancies.
Agoe of mother, x Incidence of Down syndrome, y
33 2.4
34 3.1
35 4
36 5
37 6.7
38 8.3
39 10
40 13.3
41 16.7
42 22.2
43 28.6
44 33.3
45 50
a) use a graphing utility to draw a scatter diagram
b)find the line of best fit
c)exprress the model
d)interpret the slope
e)predict the incidence rate of down syndrome for a mother's age of 46
