For the interval estimation of when is known and the sample is ...

[Arii_bell]

For the interval estimation of  when  is known and the sample is large, the proper distribution to use is the
 a. normal distribution.
   b. t distribution with n degrees of freedom.
   c. t distribution with n + 1 degrees of freedom.
   d. t distribution with n - 1 degrees of freedom.

Question 2

All of the following are true about a cyclical pattern except it is
 a. often due to multiyear business cycles.
  b. often combined with long-term trend patterns and called trend-cycle patterns.
  c. an alternating sequence of data points above and below the trend line.
  d. usually easier to forecast than a seasonal pattern due to less variability in length of time.

[wshriver]

Answer to Question 1

a

Answer to Question 2

d

[Arii_bell]

Thank you

[wshriver]

No problemo