distribution topurchase amount

Project Description:

a popular retail store knows that the distribution of purchase amounts by its customers is approximately normal with a mean of $30 and a standard deviation of $9. below you will find probability and percentile calculations related to the customer purchase amounts. a. what is the probability that a randomly selected customer will spend less than $15 at this store? b. what is the probability that a randomly selected customer will spend $20 or more at this store? c. what is the probability that a randomly selected customer will spend $30 or more at this store? d. what is the probability that a randomly selected customer will spend between $20 and $35 at this store? e. what two dollar amounts, equidistant from the mean of $30, such that 90% of all customer purchases are between these values? f. what two dollar amounts, equidistant from the mean of $30, such that 98% of all customer purchases are between these values?
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Price Type: Negotiable

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