A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9.
What is the probability that a randomly selected customer will spend between $20 and $35 at this store?
This short answer question belongs to Statistics and it is about calculating the probability of finding customers who spend between $20 to $35 in a store. The calculation has been given in the solution.
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