In the randomized block design for ANOVA, where k is the number ...

[vinney12]

In the randomized block design for ANOVA, where k is the number of treatments and b is the number of blocks, the number of degrees of freedom for error is:
 a. k - b
  b. kb - 1
  c. n - k - b + 1
  d. None of these choices.

Question 2

What is the average run length (ARL) until an x control chart signals a false alarm if the control limits are set at 2.5 standard errors from the centerline?

[mmj22343]

Answer to Question 1

C

Answer to Question 2

The probability of a Type I error for each sample is .0124 namely, P( z  > 2.5, hence the ARL = 1/.0124 = 80.6  81 samples should be taken.

[vinney12]

Thank you

[mmj22343]

Happy to help you