The F-test of the randomized block design of the analysis of ...

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The F-test of the randomized block design of the analysis of variance has the same requirements as the independent samples design; that is, the random variable must be normally distributed and the population variances must be equal.
  Indicate whether the statement is true or false

Question 2

Assume that the control limits of an x chart are defined as 3 standard errors above and below the centerline. Calculate the probability that a sample mean falls outside the control limits when the process is in fact under control.

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Answer to Question 1

T

Answer to Question 2

P = P ( z  > 3) = P (z < -3) + P (z > 3) = 2(.50 - .4987) = .0026

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TYSM

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Gracias!