Consider the hospital emergency room data in

Chapter 2, Problem 134E

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QUESTION:

Consider the hospital emergency room data in Example 2-8. Suppose that three visits that resulted in LWBS are selected randomly (without replacement) for a follow-up interview.

(a) What is the probability that all three are selected from hospital 2?

(b) What is the probability that all three are from the same hospital?

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QUESTION:

Consider the hospital emergency room data in Example 2-8. Suppose that three visits that resulted in LWBS are selected randomly (without replacement) for a follow-up interview.

(a) What is the probability that all three are selected from hospital 2?

(b) What is the probability that all three are from the same hospital?

ANSWER:

Solution:

Step 1 of 3:

The summarized data regarding the emergency rooms of the hospitals are given.

                                Hospital

1

2

3

4

Total

Total

5292

6991

5640

4329

22,252

LWBS

195

270

246

242

953

Admitted

1277

1558

666

984

4485

Not admitted

3820

5163

4728

3103

16,814

Also, it is given that three visits that resulted in LWBS are selected at random without replacement.

Using this we have to find the required values.


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