You run a regression analysis on a bivariate set of data (
n
=
58
). With
¯
x
=
47.1
and
¯
y
=
23.3
, you obtain the regression equation
y
=
3.122
x
−
13.765
with a correlation coefficient of
r
=
0.544
. You want to predict what value (on average) for the response variable will be obtained from a value of 30 as the explanatory variable.

What is the predicted response value?