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

Click here to see ALL problems on Probability-and-statistics

Question 148409This question is from textbook
: the probability that San Francisco plays in the next Super Bowl is nine times the probability that they do not play in the next Super Bowl. The probability that San Francisco plays in the next Super Bowl plus the probabilty that they do not play is 1. What is the probablity that San Francisco plays in the next Super Bowl? This question is from textbook

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
the probability that San Francisco plays in the next Super Bowl is nine times the probability that they do not play in the next Super Bowl. The probability that San Francisco plays in the next Super Bowl plus the probabilty that they do not play is 1. What is the probablity that San Francisco plays in the next Super Bowl?
-----------------
P(plays) = 9*P(not plays)
P(plays) + P(not plays) = 1
--------------
Substitute to solve for P(plays)
---------------
9*P(not plays) + P(not plays) = 1
10P(not plays) = 1
P(not plays) = 0.1
--------
Substitute to solve for P(plays)
P(plays) = 9*0.1 = 0.9
==========================
Cheers,
Stan H.