Fritsche542 Fritsche542

19-05-2014
Mathematics

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The average number of customers that visited a particular store during the past year is 160 per day and a standard deviation of 25 customers per day. A random sample of 64 days is chosen from this population. The standard deviation of the sample mean equals ...

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Angelalovely20 Angelalovely20

19-05-2014

the standard of the Sample means 256

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