5.2-5.4 REVIEW. IS THE FOLLOWING A PROBABILITY DISTRIBUTION? XP(x) 1.4 2.35 3.2 4.05.

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Presentation transcript:

REVIEW

IS THE FOLLOWING A PROBABILITY DISTRIBUTION? XP(x)

FIND THE MEAN OF THE PROBABILITY DISTRIBUTION XP(x)

FIND THE MEAN AND STANDARD DEVIATION You pay $10 to enter a raffle in which you have a.04 chance of winning $1,000. What is the expected value and standard deviation of your earnings?

IS THIS RESULT UNUSUAL? There is a probability that the world series lasts 4 games, that it lasts 5, that it lasts 6, and that it lasts 7. Is it unusual for the series to end in 4 games?

FIND THE PROBABILITY You have a slot machine programmed to have a 1/2000 chance of a jackpot. Find the probability of getting exactly 2 jackpots in 5 trials.

FIND THE PROBABILITY There is a 95% probability that an Oswego student can read at above a 5 th grade level. If you randomly select 8 students, what’s the probability that at least 6 can read at this level?

FIND THE MEAN AND STANDARD DEVIATION There is a 30% chance of reaching base in a baseball game. What’s the expected value of times reaching base in 100 at bats?’ What’s the standard deviation? Would it be unusual to reach base 43 times?