The process mean and standard deviation can be estimated by using ...

[JMatthes]

The process mean and standard deviation can be estimated by using samples that are selected from the process when _____.
 a. it has only assignable-cause variation
  b. its output is uniformly distributed
  c. it is assumed to be operating in control
  d. it is operating at peak capacity

Question 2

The exponential smoothing forecast for any period is a weighted average of all the previous actual values for the time series.
  Indicate whether the statement is true or false

[adammoses97]

Answer to Question 1

c

Answer to Question 2

T

[JMatthes]

TYSM

[ryansturges]

Gracias!