in a survey of 15 accountants, 10 favored present-value accounting, 6 favored a shortening of the allowable depr. period and 3 recommended no change. suppose one of the accountants involved in the surevey is selected at random.
a) what is the prbability that she favors present-value accounting
b) what is the probability that she favors either present-value accounting proc. or a shortenin gof the all assest depr
c) what is the probability that she favors both present value account and short of the allow asset depr?