Question

11.9 A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three affil Kated Vocations. Management had a business objective of reducing waiting time for emergency room cases that did not require immedi- ate attention. To study ti a random sample of 15 emergency room cases that did not require immediate attention at each location were selected on a particular day, and the waiting times (measured from check-in to when the patient was called into the clinic area) were collected and stored in Erwalting a. At the 0.05 level of significance, is there evidence of a difference in the mean waiting times in the four locations? b. If appropriate, determine which locations differ in mean waiting time. e. At the 0.05 level of significance, is there evidence of a difference in the variation in waiting time among the four locations?

Answer 1

a At oos os there is evidence that you a difference is the mean waiting time in the Four locator Because the Po value in ANOVA table 13 ool which is less than a. - jie_Dioj <0.05 Henie we rexet Ho af 51. Los e conclude that the there is difference in the mear waiting time is the Four locato. 1 by using past Hoc Test, we can deforme this - The location 0:00 fot.00 is differ to meon waiting time as compar to other because the values For this two ting are less than alpha. je. .0.000< 0.05 . > Foo From the Homogeneous subset's table The agrilicant a p-value is bot Ggnifican Becaus This value is greaps that alpla. _ jie. So 01200 30.05 Herle we accept to of 0.05 Los & conclude that the there is so diffusenie is the wooahosin waiting I time among the four location.