If we are interested in testing whether the mean of population 1 is significantl
ID: 3176068 • Letter: I
Question
If we are interested in testing whether the mean of population 1 is significantly different from the mean of population 2, the correct null hypothesis is (please select correct answers)
a. H0: 1- 2 0
b. H0: 1- 2 = 0
c. H0: 1- 2 > 0
d. H0: 1- 2 = 0
The level of significance:
can be any positive value
can be any value
can be any value between -1.96 to 1.96
is (1 - confidence level)
a.can be any positive value
b.can be any value
c.can be any value between -1.96 to 1.96
d.is (1 - confidence level)
Explanation / Answer
Here we need to check whether there is any significant difference between two means
So H0: mu1=mu2 vs H1: mu1 not equal to mu2
So answer is b and d as they are both are same thing
The level of significance is 1-confidence level so answer is d.