Independent random samples from normal populations produced the results shown in the next table. Sample 1 Sample
Question:
Sample 1 Sample 2
1.2............................. 4.2
3.1............................. 2.7
1.7............................. 3.6
2.8............................. 3.9
3.0.............................
a. Calculate the pooled estimate of Ï2.
b. Do the data provide sufficient evidence to indicate that µ2 > µ1? Test using α = .10.
c. Find a 90% confidence interval for (µ1 - µ2).
d. Which of the two inferential procedures, the test of hypothesis in part b or the confidence interval in part c, provides more information about (µ1 - µ2)?
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Related Book For
Statistics For Business And Economics
ISBN: 9780321826237
12th Edition
Authors: James T. McClave, P. George Benson, Terry T Sincich
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