So probability is (disred outcomes) divided by (total possible outomces
so hearts and clubs are 2 out of 4 total suits and since there are the same number of cards per suit, it simplifies 2=desrired oucomes 4=total possible 2/4=1/2=0.5=50%
I think the correct answer from the choices listed above is the third option. <span>If a statistic used to estimate a parameter is such that the mean of its sampling distribution is equal to the actual value of the parameter, then it is a biased estimator. Hope this answers the question. </span>