After a number of complaints about its directory assistance, a telephone company examined samples of calls...
After a number of complaints about its directory assistance, a telephone company examined samples of calls to determine the frequency of wrong numbers given to callers. Each of the 8 samples consisted of 131 calls.
| 6 | 5 | 7 | 10 |
| 5 | 5 | 7 | 5 |
Calculate p one bar (Keep five decimal places in your answer)
Homework Answers
P- bar = Average proportion of wrong numbers given to callers
Total number of calls = 131*8 = 1048
Total number of wrong numbers given to callers = 6+5+7+10+5+5+7+5 = 50
Hence,
p - bar = 50/1048 = 0.04771
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