Answer:
Christie spent 17.64$.
Step-by-step explanation:
0.2 x 15.50 = 3.1
15.50 + 3.1 = 12.4
0.2 x 5.50 = 1.1
5.50 - 1.1 = 4.4
12.4 + 4.4 = 16.8
0.05 x 16.8 = 0.84
0.84 + 16.8 = 17.64
Using the binomial distribution, it is found that there is a 0.125 = 12.5% probability that the team goes to the championship.
<h3>What is the binomial distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem:
- His team has a p = 0.5 probability of winning each game.
- The team plays 3 games, hence n = 3.
The team moves to the championship if they win all three games, hence the probability is P(X = 3), given as follows:
0.125 = 12.5% probability that the team goes to the championship.
More can be learned about the binomial distribution at brainly.com/question/24863377
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Substituting for values of j:-
S5 = 2(1) + 2(2) + 2(3) + 2(4) + 2(5) = 2+4+6+8+10 = 30 answer