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Assignment help 2312

I need help with the following question.  The MOST important is that I understand the process!

Please annotate how you derived at the correct answer.

Thank you in advance!

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 are the two dollar amounts, equidistant from the mean of $30, such that 90%

of all customer purchases are between these values? Place your answers in the blanks

provided. Do not include a dollar sign. For example, 14.25 would be a legitimate entry.

Lower value __________

Upper value __________


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