document.write( "Question 1034165: Suppose there is an average of 2 suicides per year per 50 000 population. In a city of 100 000 people, find the probability that:\r
\n" ); document.write( "\n" ); document.write( "(a)not less that 3 suicides in two years.0 suicide per year.
\n" ); document.write( "(b)0 suicide per year. \n" ); document.write( "

Algebra.Com's Answer #648779 by robertb(5830) $\"\"$ $\"About$

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The r.v. X = # of suicides in a year, follows the Poisson distribution, with pmf $\"p%28x%29+=+%28%28lambda%29%5Ex%2F%28x%21%29%29e%5E%28-%28lambda%29%29\"$ , and $\"lambda+=+2%2A%28100000%2F50000%29+=+4\"$ .\r
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, to three significant figures.\r
\n" ); document.write( "\n" ); document.write( "(b) $\"p%28x=0%29+=+p%280%29+=+%284%5E0%2F%280%21%29%29e%5E-4++=+0.01832\"$ , to four significant figures. \n" ); document.write( "

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