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kate lynn kate lynn
wrote...
Posts: 757
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6 years ago
The average weekly earnings of bus drivers in a city are 950 (that is ) with a standard deviation of 45 (that is ). Assume that we select a random sample of 81 bus drivers.
 a. Compute the standard error of the mean.
  b. What is the probability that the sample mean will be greater than 960?
  c. If the population of bus drivers consisted of 400 drivers, what would be the standard error of the mean?
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Replies
wrote...
6 years ago
a . 5
b. 0.0228
c. 4.47
kate l. Author
wrote...
6 years ago
What an excellent community, thanks for answering
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