The Basic Practice of Statistics 7th Edition

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

Chapter 21 - Comparing Two Means - Apply Your Knowledge - Page 505: 21.17

Answer

There is not sufficient evidence to support the claim

Work Step by Step

x1 = $\frac{166.2+157.3+166.7+161.1}{4}$ = 162.825 x2 = $\frac{166.8+142.4+162.8+162.4}{4}$ = 157.6 x1-x2 = 162.825-157.6 = 5.225 P = .06+.11+.04+.04 = .25 P = .25 There is not sufficient evidence to support the claim
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