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Test the difference between the two normal population means.
Grand Strand Family Medical Center is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, one in the Little River Area and the other in Murrells Inlet. The Quality Assurance Department wishes to compare the mean waiting time for patients at the two locations. Samples of the waiting times, reported in minutes, follow:
Location
Waiting Time
Little River
31.73
28.77
29.53
22.08
29.47
18.6
32.94
25.18
29.82
26.49
Murrells Inlet
22.93
23.92
26.92
27.2
26.44
25.62
30.61
29.44
23.09
23.1
26.69
22.31
Assume the population standard deviations are not the same. At the .05 significance level, is there a difference in the mean waiting time?
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In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
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Determine the coefficient of determination R 2 . Determine standard error of the estimate s e .
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Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
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