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# \$5.00Statistics

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Q:

Decide whether the experiment is a binomial, Poisson or neither based on the info given:

a) You remove 1 ball from an urn of 5 balls, numbered 1-5. The random variable represents the number on the drawn ball.

b) You play the lottery every week for 52 weeks. The random variable represents the number of wins.

c) You have a bag of 200 peanuts. It is know that on the average there are 3.7 bad peanuts per 200. The random variable counts the number of bad peanuts per 200.

d) You have a bag of 200 peanuts. The chance of selecting a "bad peanut" from the bag is 5%. The random variable counts the number of peanuts removed until the first bad peanut is encountered.

e) At particular intersection there are 12.3 accidents per year. The random variable counts the number of accidents per year.

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I guarentee an A+
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• Posted on May 26, 2012 at 4:17:12PM
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Preview: ... ank ...

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Explanations and more, from a PhD with probability and stats experience
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• Posted on May 26, 2012 at 5:32:11PM
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Preview: ... ugh 5 are equally likely. (b)  Each week is a Bernoulli trial with very low probability of success.  It follows that this is binomial.  It is approximately Poisson since n is high. (c)  This is binomial, to the letter.  Each test of a peanut is an i ...

The full tutorial is about 192 words long .

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A+ solution for you! (Binomial / Poisson)
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• Posted on May 26, 2012 at 6:42:37PM
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