- 1 AnswerDrama5 hours ago
A fair coin is tossed 100 times. Let X be the number of times heads comes up. Find Pr[X = 50].
X is a discrete random variable with Pr[x=0]=1/5 and Pr[x=1]=4/5. What is the standard deviation?
A certain experiment has 2 possible outcomes, t1 and t2. These outcomes are equally likely to occur when the experiment is performed. These are 2 discrete random variables defined for this experiment, X and Y. When outcome t1 occurs, X has the value 0 and Y has the value -2. When outcome t2 occurs, X has the value 1 and Y has the value 2. All of this information is summarized in the table shown below. Find the standard deviation of (X+Y)
outcome probability x Y
t1 1/2 0 -2
t2 1/2 1 2
A soccer team named the Victorious Lunatics will play 6 games in UWO league play this season. In each game that the team plays, they are twice as likely to win as to tie (i.e. have the game end in a draw), and twice as likely to tie as to lose. What is the probability that the Victorious Lunatics will end the season with 4 wins, 1 tie and 1 loss?1 AnswerHomework Help7 months ago
A box contains 3 red chips, 2 blue chips and 5 white chips. Eight chips are drawn at random from the box one at a time with replacement. That is, each chip is put back in the box before the next one is drawn. All chips are identical except for colour. What is the probability that exactly 5 of the drawn chips are blue?