The purpose of designing a randomized block experiment is to ...

[tth]

The purpose of designing a randomized block experiment is to reduce the between-treatments variation (SST) to more easily detect differences between the treatment means.
  Indicate whether the statement is true or false

Question 2

Assume that the control limits of an x chart are defined as 2.5 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.

[mbcrismon]

Answer to Question 1

F

Answer to Question 2

P = P ( z  > 2.5) = P (z < -2.5) + P (z > 2.5) = 2(.50 - .4938) = .0124

[tth]

Thanks for the timely response, appreciate it

[amit]

Gracias!