Information about normal probability distribution

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The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.

Define the random variable in words.

The mayor of Dayton makes $2,250 a month. What percentage of Dayton residents has incomes that are more than the mayor's?

Individuals with incomes of less than $1,985 per month are exempt from city taxes. What percentage of residents is exempt from city taxes?

What are the minimum and the maximum incomes of the middle 95% of the residents?

Two hundred residents have incomes of at least $4,440 per month. What is the population of Dayton?

Reference no: EM1392137

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