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Unformatted text preview: Inclass Assignment Week 4 Math 221 Name: _Nichole DAnnunzio_ Date:_________________ Section 4.1 1. Is the following a probability distribution? If so, what were the steps you took to confirm it? No. Tails Probabilities 1 2 3 4 0.5000 5 0.2000 6 0.2000 7 0.1000 8 9 10 I added the individual probabilities. The sum of the probabilities is equal to one so the distribution covers all possible outcomes. 2. Is the following a probability distribution? Why or Why not? X P(x) 1 0.49 2 0.05 3 0.25 4 0.07 5 0.07 No it is not one because the sum of the probabilities does not equal one. 3. Complete the following, find the E(x) (Expected Value or mean), the variance and the standard deviation Use either Excel or TI83. No. Tails Frequency 1 2 3 4 4 5 2 6 2 7 1 8 9 10 total 9 Expected value= 5 Variance= 1.763636 Standard deviation= 1.32802 Section 4.2 & Section 4.3 4. Decide whether the experiment is a binomial, Poisson, or neither based on the information given. The probability that a federal income tax return is filled out incorrectly with an error in given....
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 Spring '10
 HILLES
 Math, Probability

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