Kenneth S. answered • 01/26/18

^{2}

...is probability of being late both days; P(on time both days) = the square of (8/9). Call these two results a and b, respectively. The P(being late exactly one day is 1 - a - b.

Kenneth S.

01/26/18

Kenneth S.

^{2}= (1/12)

^{2 }+ 2(1/12)(11/12) + (11/12)

^{2}is the expansion; first term is probability of on time both days; last term is probability of late both days; middle term is probability of one late, one on time.

^{2}.

01/26/18

Amy S.

01/26/18

Kenneth S.

01/27/18

Amy S.

01/26/18