Stats M. 9

Question 1

alternative hypothesis two tailed test

Answer 1

Ha: μ1 ≠ μ2

Question 2

alternative hypothesis one tailed test

Answer 2

Ha: μ1 <, > μ2

Question 3

if 0 is in the confidence interval….

Answer 3

we are not able to make a conclusion regarding whether or not the parameters differ

Question 4

if 0 is not in the confidence interval…

Answer 4

you can infer that μ1 <, > μ2

Question 5

independent sample are…

Answer 5

not related

Question 6

dependent samples are…

Answer 6

samples that have some relationship or natural pairing component
-taking measures on the same subject (before and afters)
-referred to as pair samples

Question 7

order of subtraction determines…

Answer 7

-what is stated first in the conclusion
-what p value to use (look at what comes first and what the prompt is asking for that variable)

Question 8

when interpreting confidence intervals…

Answer 8

-if lower and upper #’s are both negative, you state … is between … and … LESS than ….
- if lower and upper #’s are both positive, you state … is between … and … MORE than
- if one is positive and one is negative, you state … is between … LESS and … MORE than …

Question 9

if “between” variation > “within” variation…

Answer 9

then conclude that not all of the means of the populations are equal

Question 10

one way ANOVA hypothesis…

Answer 10

Ho: μ1 = μ2 = μ3 = ….
Ha: one mean is different than another
-remember one way anova use “f” as their test statistic