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 - Chapter 21 Exercises - Page 515: 21.53c

Answer

A two-sample t-test gives the degrees of freedoms of 132.1, as well as a t-value of -5.2185 and a p-value of 6.81 x eāˆ’7. This means there is evidence that the mean lengths of the two varieties differ. A 95% confidence interval is (-3,1103, -1.4005)

Work Step by Step

A two-sample t-test gives the degrees of freedoms of 132.1, as well as a t-value of -5.2185 and a p-value of 6.81 x eāˆ’7. This means there is evidence that the mean lengths of the two varieties differ. A 95% confidence interval is (-3,1103, -1.4005).
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