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8.5 Probability Applications Question #4 (Medium)

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8.5 Challenging Integral Applications Probability Applications Question #4 (Medium): Normal Distribution Strategy Normal distribution has its probability density function as , where is the mean √ and the standard deviation. Sample Question Average amount of money spent on groceries for a single adult is shown to be $300 per month with standard deviation of $80 according to a random city survey, and it is normally distributed. 1) What is the probability that an adult chosen at random spends over $500 per month? 2) What percentage of the city population spend less than $200 on groceries
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