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The Monthly Income of Residents of Daisy City Is Normally

Question 139

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The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a standard deviation of $500.
a.Define the random variable in words.
b.The mayor of Daisy City makes $2,250 a month. What percentage of Daisy City's residents has incomes that are more than the mayor's?
c.Individuals with incomes of less than $1,985 per month are exempt from city taxes. What percentage of residents is exempt from city taxes?
d.What are the minimum and the maximum incomes of the middle 95% of the residents?
e.Two hundred residents have incomes of at least $4,440 per month. What is the population of Daisy City?

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a.the monthly income...

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