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cmsx27 cmsx27
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6 years ago
A random sample of 49 lunch customers was taken at a restaurant. The average amount of time these customers stayed in the restaurant was 45 minutes with a standard deviation of 14 minutes.
 a. Compute the standard error of the mean.
  b. With a .95 probability, what statement can be made about the size of the margin of error?
  c. Construct a 95 confidence interval for the true average amount of time customers spent in the restaurant.
  d. With a .95 probability, how large of a sample would have to be taken to provide a margin of error of 2.5 minutes or less?
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umass508umass508
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cmsx27 Author
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6 years ago
Smart ... Thanks!
aricketts6@
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Helped a lot
lolaww
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2 hours ago
This calls for a celebration Person Raising Both Hands in Celebration
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