When testing for the difference between the means of two independent populations, with samples of ...

Author Question: When testing for the difference between the means of two independent populations, with samples of ... (Read 85 times)

lbcchick

Hero Member
Posts: 550

on: Jun 24, 2018

When testing for the difference between the means of two independent populations, with samples of sizes n1 and n2, where the population variances are unknown but assumed to be equal, what is the number of degrees of freedom?

A) n - 1
B) n1 + n2 - 1
C) n1 + n2 - 2
D) n - 2

Question 2

What is the mean of Y?

A) 680
B) 330
C) 120
D) 140

Melissahxx

Sr. Member
Posts: 304

Reply #1 on: Jun 24, 2018

Answer to Question 1

C

Answer to Question 2

D

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