A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed...
A study of long-distance phone calls made from General Electric
Corporate Headquarters in Fairfield, Connecticut, revealed the
length of the calls, in minutes, follows the normal probability
distribution. The mean length of time per call was 3.8 minutes and
the standard deviation was 0.70 minutes. Use Appendix B.3.
What is the probability that calls last between 3.8 and 4.5
minutes? (Round your z value to 2 decimal places and final answer
to 4 decimal places.)
What is the probability that calls last more than 4.5 minutes?
(Round your z value to 2 decimal places and final answer to 4
decimal places.)
What is the probability that calls last between 4.5 and 5.5
minutes? (Round your z value to 2 decimal places and final answer
to 4 decimal places.)
What is the probability that calls last between 3.5 and 5.5
minutes? (Round your z value to 2 decimal places and final answer
to 4 decimal places.)
As part of her report to the president, the director of
communications would like to report the length of the longest (in
duration) 6 percent of the call What is this time? (Round your z
value to 2 decimal places and final answer to 2 decimal
places.)
Homework Answers
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A study of long-distance phone calls made from General Electric
Corporate Headquarters in Fairfield, Connecticut, revealed...
A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed...
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both A and B, B
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