Cora is playing a game that involves flipping three coins at once. Let the random variable HHH be the number of coins that land
showing "heads". Here is the probability distribution for HHH: H= \# \text{ of heads}H=# of headsH, equals, \#, start text, space, o, f, space, h, e, a, d, s, end text 000 111 222 333 P(H)P(H)P, left parenthesis, H, right parenthesis 0.1250.1250, point, 125 0.3750.3750, point, 375 0.3750.3750, point, 375 0.1250.1250, point, 125 P(H < 3)=P(H<3)=P, left parenthesis, H, is less than, 3, right parenthesis, equals
