You plan to study the relation between x = age and y= whether belong to a social network such as Facebook (1 = yes). A priori, you predict that P(y = 1)

is currently between about 0.80 and 0.90 at x = 18 and between about 0.20 and 0.30 at x = 65. If the logistic regression model describes this relation well, what is a plausible range of values for the effect ????1 of x in the model?