A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below.

bettersameworseRepublican3810444Democrat1287137none2190118

Express your answers as a decimal and round to four decimal places.

If we randomly select one of the adults who participated in this study, compute:

a.P(affiliated with neither party) =

b.P(better) =

c.P(better|affiliated with neither party) =

d.P(affiliated with neither party|better) =

3.P(affiliated with neither party and better) =