Question
A major department store has determined that its customers charge an average of $500 per month, with a standard deviation of $80. Assume the amounts
A major department store has determined that its customers charge an average of $500 per month, with a standard deviation of $80. Assume the amounts of charges are normally distributed.
What percentage of customers charges more than $390 per month?
What percentage of customers charges between $650 and $700 per month?
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Probability and Random Processes With Applications to Signal Processing and Communications
Authors: Scott Miller, Donald Childers
2nd edition
123869811, 978-0121726515, 121726517, 978-0130200716, 978-0123869814
