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Mathematics 11 Online
OpenStudy (anonymous):

PLEASE HELP!! I WILL GIVE A MEDAL!!!! Peter Pine is doing his budget. He discovers that he has spent an average of $225.00 a month on entertainment for the year with a standard deviation of $75.00. What percent of his monthly expenses for this category would he expect to fall between $60.00 and $390.00? The z for $60.00 = - . The percent of area associated with $60.00 = %. The z for $390.00 = . The percent of area associated with $390.00 = %. Adding the two percentages together, Peter calculates his answer to be

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