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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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KAtlold KAtlold
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6 years ago
You are interested in determining the average cost of a 3-minute telephone call to locations within the continental U.S. What sample size must you take to be 96 confident that the results will be within .75 of the true mean cost per call? From the phone company, you have gotten an estimate of = 7.71.
 a. 185
  b. 445
  c. 406
  d. 574
  e. 22
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m7md9078m7md9078
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6 years ago
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KAtlold Author
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6 years ago
Good timing, thanks!
Liarec
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Yesterday
this is exactly what I needed
Zacellison
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2 hours ago
You make an excellent tutor!
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