A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three satellite locations. Management had a business objective of reducing waiting time for emergency room cases that did not require immediate attention. To study this, a random sample of 15 emergency room cases that did not require immediate attention at each location was selected on a particular day, and the waiting times (measured from check into when the patient was called into the clinic area) were collected and stored in the table.At the 0.05 level of significance, is there evidence of a difference in the mean waiting times inthe four locations?MainSatellite 1Satellite 2Satellite 3120.0830.7575.8654.0581.9061.8337.8838.8278.7926.4068.7336.8563.8353.8451.0832.8379.7772.3050.2152.9447.9453.0958.4734.1379.8827.6786.2969.3748.6352.4662.9078.5255.4310.6444.8455.9564.0653.5064.1749.6164.9937.2850.6866.4053.8234.3147.9776.0662.4366.0060.5711.3765.078.9958.3783.5181.0229.7530.4039.17 11.9 A hospital conducted a study of the waiting time in its emer-gency room. The hospital has a main campus and three satellitelocations. Management had a business objective of reducing wait-ing time for emergency room cases that did not require immediateattention. To study this, a random sample of 15 emergency roomcases that did not require immediate attention at each locationwere selected on a particular day, and the waiting times (measuredfrom check-in to when the patient was called into the clinic area)were collected and stored in ERWaiting.a. At the 0.05 level of significance, is there evidence of a differ-ence in the mean waiting times in the four locations?b. If appropriate, determine which locations differ in meanwaiting time.c. At the 0.05 level of significance, is there evidence of adifference in the variation in waiting time among the fourlocations?

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Answered: 11.9 A hospital conducted a study of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three satellite locations. Management had a business objective of reducing waiting time for emergency room cases that did not require immediate attention. To study this, a random sample of 15 emergency room cases that did not require immediate attention at each location was selected on a particular day, and the waiting times (measured from check into when the patient was called into the clinic area) were collected and stored in the table.

At the 0.05 level of significance, is there evidence of a difference in the mean waiting times in

the four locations?

Main	Satellite 1	Satellite 2	Satellite 3
120.08	30.75	75.86	54.05
81.90	61.83	37.88	38.82
78.79	26.40	68.73	36.85
63.83	53.84	51.08	32.83
79.77	72.30	50.21	52.94
47.94	53.09	58.47	34.13
79.88	27.67	86.29	69.37
48.63	52.46	62.90	78.52
55.43	10.64	44.84	55.95
64.06	53.50	64.17	49.61
64.99	37.28	50.68	66.40
53.82	34.31	47.97	76.06
62.43	66.00	60.57	11.37
65.07	8.99	58.37	83.51
81.02	29.75	30.40	39.17

11.9 A hospital conducted a study of the waiting time in its emer-
gency room. The hospital has a main campus and three satellite
locations. Management had a business objective of reducing wait-
ing time for emergency room cases that did not require immediate
attention. To study this, 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 ERWaiting.
a. At the 0.05 level of significance, is there evidence of a differ-
ence in the mean waiting times in the four locations?
b. If appropriate, determine which locations differ in mean
waiting time.
c. At the 0.05 level of significance, is there evidence of a
difference in the variation in waiting time among the four
locations?

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