In an independent-measures hypothesis test, what must be true if ...

[rosent76]

In an independent-measures hypothesis test, what must be true if t = 0?
 
  A) The two population means must be equal.
  B) The two sample means must be equal.
  C) The two sample variances must be equal.
  D) The two sample means are not equal.

Question 2

In a grouped frequency distribution one interval is listed as 50-59. Assuming that the scores are measuring a continuous variable, what are the real limits of this interval?
 
  A) 50 and 59
  B) 50.5 and 59.5
  C) 49.5 and 59.5
  D) 49.5 and 60.5

[Brenm]

Answer to Question 1

B

Answer to Question 2

C

[rosent76]

Excellent

[juliaf]

Thanks for the timely response, appreciate it