State the mean and standard deviation (in KN/m²) of the test statistic. (Round your standard deviation to three decimal places.) Mean 1425 standard devaition 12.97 For a test with ox=0.01, what is the probability that the mixture will be judged unsatisfactory when in fact μ=1,425 (a type Il error)? (Round your answer to four decimal places.) x (i) If the true average is 1,425, what is the power of the test (four decimal places). Power- x
State the mean and standard deviation (in KN/m²) of the test statistic. (Round your standard deviation to three decimal places.) Mean 1425 standard devaition 12.97 For a test with ox=0.01, what is the probability that the mixture will be judged unsatisfactory when in fact μ=1,425 (a type Il error)? (Round your answer to four decimal places.) x (i) If the true average is 1,425, what is the power of the test (four decimal places). Power- x
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A mixture of pulverized fuel ash and Portland cement to be used for grouting should have a compressive strength of more than 1,400 KN/m². The
mixture will not be used unless experimental evidence indicates conclusively that the strength specification has been met. Suppose compressive
strength for specimens of this mixture is normally distributed with o-58. Let u denote the true average compressive strength.
(a) What are the appropriate null and alternative hypotheses?
Hox=1,400
H₁1,400
Ho<1,400
H₂μ=1,400
O Ho:44 1,400
Transcribed Image Text:(h) What is the probability distribution of the test statistics when μ=1,425 and n=20?
The test statistic has an exponential distribution
The test statistic has a binomial distribution
The test statistic has a gamma distribution
The test statistic has a normal distribution.
State the mean and standard deviation (in KN/m²) of the test statistic. (Round your standard deviation to three decimal places.)
Mean
1425
standard devaition 12.97
For a test with oc=0.01, what is the probability that the mixture will be judged unsatisfactory when in fact U=1,425 (a type Il error)? (Round your
answer to four decimal places.)
(i) If the true average is 1,425, what is the power of the test (four decimal places).
Power=
X
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