First let us calculate for the z score using the formula:
z = (x – u) / s
where x = 8, u is the mean = 12.7 years, s is the
standard deviation
z = (8 – 12.7) / 2.5
z = -1.88
From the standard probability tables, the p value at z =
-1.88 is:
P = 0.0301 = 3.01%
1,2,4,8 (when divided by 32, the result is a whole number. This means that they can be multiplied to make 32)
<span>15b^2 + 20b
=5b(3b + 4)
......................</span>
I think it is D) positive association, non-linear