The statistic (n - 1)s2 / 2 has a chi-squared distribution with n ...

[theo]

The statistic (n - 1)s2 / 2 has a chi-squared distribution with n - 1 degrees of freedom if:
 a. the sample has a Student t-distribution with degrees of freedom equal to n - 1.
  b. the sample is normally distributed with variance equal to s2.
  c. the population is normally distributed with variance equal to 2.
  d. All of these choices are true.

Question 2

To apply the Friedman test to determine whether the locations of two or more populations are the same, the samples must be:
 a. from a randomized block experiment.
  b. from normal populations.
  c. independent.
  d. All of these choices are true.

[kxciann]

Answer to Question 1

C

Answer to Question 2

A

[theo]

Thanks for the timely response, appreciate it

[nguyenhoanhat]

Excellent