When s is used to estimate , the margin of error is computed by ...

[rmenurse]

When s is used to estimate , the margin of error is computed by using the
 a. normal distribution.
   b. t distribution.
   c. mean of the sample.
   d. mean of the population.

Question 2

A method that uses a weighted average of past values for arriving at smoothed time series values is known as
 a. a smoothing average.
  b. a moving average.
  c. additive approach.
  d. exponential smoothing.

[JYan]

Answer to Question 1

b

Answer to Question 2

d

[rmenurse]

TYSM

[robbielu01]

Thanks for the timely response, appreciate it