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WebAssign for Devore's Probability and Statistics for Engineering and the Sciences, 9th Edition [Instant Access], Single-Term
9th Edition
ISBN: 9780357893104
Author: Devore; Jay L.
Publisher: Cengage Learning US
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Textbook Question
Chapter 8.3, Problem 34E
The following observations are on stopping distance (ft) of a particular truck at 20 mph under specified experimental conditions (“Experimental Measurement of the Stopping Performance of a Tractor-Semitrailer from Multiple Speeds,” NHTSA, DOT HS 811 488, June 2011):
The cited report states that under these conditions, the maximum allowable stopping distance is 30. A normal
- a. Does the data suggest that true average stopping distance exceeds this maximum value? Test the appropriate hypotheses using α = .01.
- b. Determine the probability of a type II error when α = .01, α = .65, and the actual value of μ is 31. Repeat this for μ = 32 (use either statistical software or Table A. 17).
- c. Repeat (b) using α = .80 and compare to the results of (b).
- d. What
sample size would be necessary to have α = .01 and β = .10 when μ = 31 and σ = .65?
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Chapter 8 Solutions
WebAssign for Devore's Probability and Statistics for Engineering and the Sciences, 9th Edition [Instant Access], Single-Term
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