Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 8 - Hypothesis Testing - 8-3 Testing a Claim about a Proportion - Page 405: 34

Answer

We reject the hypothesis.

Work Step by Step

We first find the value of z using a ti-84 calculator. To do this, press "Stat," and then select "1-PropZTest." Then, plug in .795 for $p_0,$ 44 for x, and 48 for n. Then, select $\ne p_0,$ and press enter. Doing this, we see that $z=2.088$. Using a table of z-scores, we find: $P=1-.9817+.0183=.0366$ This is less than .05, so we reject the hypothesis.
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