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Chapter 2: Q 84. (page 143)

Big sharks Refer to Exercise 76

a. Use your calculator to make a Normal probability plot of the data. Sketch this graph on your paper.

b. What does the graph in part (a) imply about whether the distribution of shark length is approximately Normal? Explain.

Short Answer

Expert verified

Part (a) The graph is

Part (b) No.

Step by step solution

01

Part (a) Step 1: Given information

The data set is:

18.712.318.616.415.718.314.615.814.917.6
12.116.416.717.816.212.617.813.812.215.2
14.712.413.215.814.316.69.418.213.213.6
15.316.113.516.222.816.813.613.613.215.7
19.718.713.216.8





02

Part (a) Step 2: Explanation

The normal probabilities plot can be constructed as

03

Part (b) Step 1: Explanation

There is an outlier in the plot above, indicating that the distribution is not approximately regularly approximated. As a result, the data cannot be claimed to come from a regularly distributed population.

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nMeanSDMinQ1MedQ3Max
5051742.448210.643664146071500095702071836

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