Answered: A sample of 26 offshore oil workers…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Related questions

Question

A sample of 26 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape. Here is a stem-and-leaf display of escape time data.

stem	leaf
32	55
33	49
34
35	6699
36	34469
37	03345
38	1
39	2347
40	23
41
42	9

(a)

Determine the value of the fourth spread.

(b)

Are there any outliers in the sample? Any extreme outliers?

There are several extreme outliers.There is one extreme outlier and several outliers. There are no extreme outliers but several outliers.There is one extreme outlier and one outlier.There are no outliers or extreme outliers.

(c)

Construct a boxplot.

Comment on its features.

The distribution is positively skewed with several outliers.The distribution is roughly symmetric with no outliers. The distribution is roughly symmetric with several outliers.The distribution is roughly bimodal with no outliers.The distribution is negatively skewed with several outliers.

(d)

By how much could the largest observation, currently 429, be decreased without affecting the value of the fourth spread?

sec