Problem 2 21 Suppose that the average waiting time for a patient at a physician's office is just over 29 minutes In order to address the issue of long patient wait times, some physician's offices are using wait tracking systems to notify patients of expected wait times Patients can adjust their arrival times based on this information and spend less time in waiting rooms The following data show wait times (minutes) for a sample of patients at offices that do not have a wait tracking system and wait times for a sample of patients at offices with a wait tracking system (a) Considering only offices without a wait tracking system, what is the z score for the tenth patient in the sample (wait time 35 minutes) If required, round your intermediate calculations and final answer to two decimal places z score (b) Considering only offices with a wait tracking system, what is the z score for the sixth patient in the sample (wait time 35 minutes) If required, round your intermediate calculations and final answer to two decimal places z score Without Wait Tracking System With Wait Tracking System 23 31 62 10 15 13 21 17 32 11 45 35 10 10 26 2 16 11 35 16

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Question: Problem 2-21 Suppose that the average waiting time for a patient at a physician's office is just over 29 minutes. In order to address the

Problem 2-21

Suppose that the average waiting time for a patient at a physician's office is just over 29 minutes. In order to address the issue of long patient wait times, some physician's offices are using wait-tracking systems to notify patients of expected wait times. Patients can adjust their arrival times based on this information and spend less time in waiting rooms. The following data show wait times (minutes) for a sample of patients at offices that do not have a wait-tracking system and wait times for a sample of patients at offices with a wait-tracking system.

(a)	Considering only offices without a wait tracking system, what is the z-score for the tenth patient in the sample (wait time = 35 minutes)?
If required, round your intermediate calculations and final answer to two decimal places.
z-score =
(b)	Considering only offices with a wait tracking system, what is the z-score for the sixth patient in the sample (wait time = 35 minutes)?
If required, round your intermediate calculations and final answer to two decimal places.
z-score =

Without Wait- Tracking System	With Wait-Tracking System
23	31
62	10
15	13
21	17
32	11
45	35
10	10
26	2
16	11
35	16

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