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Get Full Access to Elementary Statistics - 12 Edition - Chapter 6.6 - Problem 9bsc
Get Full Access to Elementary Statistics - 12 Edition - Chapter 6.6 - Problem 9bsc

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# Determining Normality. In Exercises, refer to the

ISBN: 9780321836960 18

## Solution for problem 9BSC Chapter 6.6

Elementary Statistics | 12th Edition

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Problem 9BSC

Determining Normality. In Exercises 9–12, refer to the indicated sample data and determine whether they appear to be from a population with a normal distribution. Assume that this requirement is loose in the sense that the population distribution need not be exactly normal, but it must be a distribution that is roughly bell-­shaped.

Flight Arrival Delays The arrival delay times (minutes) as listed in Data Set 15 in Appendix B.

Step-by-Step Solution:

Step 1 of 1 :

Given, The arrival delay times

 class arv delay -60 - -40 1 -40 -  -20 19 -20 -  0 18 0 - 20 8 20 - 40 1 40 - 60 1 60 - 80 0 80 - 100 0 100 - 120 1 120 - 140 1

If the histogram is roughly bell shaped, then the distribution is normal.

The given distribution is not normal.

Step 2 of 1

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