SOLUTION: The probability that San Francisco plays in the next Superbowl is nine times the probability that they do not play in the next superbowl. The probability that San Francisco plays

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Question 137181This question is from textbook
: The probability that San Francisco plays in the next Superbowl is nine times the probability that they do not play in the next superbowl. The probability that San Francisco plays in the next Superbowl plus the probability they do not play is 1. What is the probability that San Francisco play in the next Superbowl?This question is from textbook

Answer by stanbon(57352) About Me  (Show Source):
You can put this solution on YOUR website!
The probability that San Francisco plays in the next Superbowl is nine times the probability that they do not play in the next superbowl.
P(they play) = 9x ; P(they do not play) = x
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The probability that San Francisco plays in the next Superbowl plus the probability they do not play is 1.
9x+x = 1
10x = 1
x = 0.1 (prob. they do not play)
9x = 0.9 (prob. they play)
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What is the probability that San Francisco plays in the next Superbowl?
P(they play) = 0.9
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Cheers,
Stan H.