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5.2-5.4 Review

5.2-5.4 Review. Is the following a probability distribution?. Find the mean of the probability distribution. Find the mean and standard Deviation.

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5.2-5.4 Review

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  1. 5.2-5.4 Review

  2. Is the following a probability distribution?

  3. Find the mean of the probability distribution

  4. 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?

  5. Is this result unusual? • There is a 0.1919 probability that the world series lasts 4 games, 0.2121 that it lasts 5, 0.2222 that it lasts 6, and 0.3737 that it lasts 7. • Is it unusual for the series to end in 4 games?

  6. 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.

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

  8. 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?

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