Among the data collected for the World Health Organization air quality monitoring project is a measure of
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(a) Define the test statistic and critical region, assuming that the variances are equal. Let α = 0.05.
(b) If = 72.9, sx = 25.6, = 81.7, and sy = 28.3, calculate the value of the test statistic and state your conclusion.
(c) Give bounds for the p-value of this test.
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a t x y 12s 2 x 15s 2 y 271131...View the full answer
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Related Book For
Probability and Statistical Inference
ISBN: 978-0321923271
9th edition
Authors: Robert V. Hogg, Elliot Tanis, Dale Zimmerman
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