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Answer: In Exercises, use the same list of 24 sorted Old

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 24BSC Chapter 3.4

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 24BSC

In Exercises 21–28, use the same list of 24 sorted Old Faithful eruption duration times given for Exercises 17–20. Find the indicated percentile or quartile.

P 40

Step-by-Step Solution:

Answer:

Step 1 of 1

Assume that the elements in a data set are rank ordered from the smallest to the largest. The values that divide a rank-ordered set of elements into 100 equal parts are called percentiles.

1

110

2

120

3

178

4

213

5

234

6

234

7

235

8

237

9

240

10

243

11

245

12

245

13

250

14

250

15

251

16

252

17

254

18

255

19

255

20

259

21

260

22

266

23

269

24

273

To find the 90th percentile for these (ordered) scores, start by multiplying 90% times the total number of scores, which gives 40% ∗ 24 = 9.6.

Rounding up to the nearest whole number 10, we get 243.

Step 2 of 1

Chapter 3.4, Problem 24BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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Answer: In Exercises, use the same list of 24 sorted Old