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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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fundai! fundai!
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6 years ago
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:
 a. 12.649.
  b. 25.0.
  c. 2.56.
  d. 3.125.
  e. 8.0
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vbassvbass
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