Math_221_-_InClass4__used

# Math_221_-_InClass4__used - Inclass Assignment – Week 4...

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Unformatted text preview: Inclass Assignment – Week 4 Math 221 Name: _Nichole D’Annunzio_ 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 TI-83. 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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## This note was uploaded on 12/11/2011 for the course MATH 221 taught by Professor Hilles during the Spring '10 term at DeVry Ft. Washington.

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Math_221_-_InClass4__used - Inclass Assignment – Week 4...

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