B is false, since by the inclusion/exclusion principle,

By independence, we have
, which is zero if either of
or
is 0, which isn't guaranteed.
I=Prt
I=500*0.02*4
I=$40
So, basically the answer is $40.
Given that the sample size is 12, thus the degree of freedom = 12 - 1 = 11.
Using technology, the p value of the t statistic, t = 2.028 is 0.9663.
the answer would be d, very much appreciated if you would give me brainliest