The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 18 - Inference in Practice - Check Your Skills - Page 434: 18.19

Answer

(a)

Work Step by Step

We cannot generalize any of the results to the whole of the population if the sample is not random, thus the most important condition for statistical inference is for the sample to be a random sample of the population. Thus the answer is (a).
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