The outcomes of an experiment, along with the corresponding
probabilities are given below. Find the expected value of the
A computer repair shop estimates that there is a 0.4 probability that the next computer will require 30 minutes to fix, a 0.5 probability that it will require 45 minutes to fix, and a 0.1 probability that it will require 70 minutes to fix. What is the expected value for how long it will take to fix the computer?
The game of roulette uses a wheel with 38 slots. The slots are
numbered 1 through 36 with two slots numbered 0 and 00. If you bet
$1 on “odd” and the ball lands on an odd number you get $2.
Otherwise you get $0. What is the expected value of betting $1 on
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