Mean Test

Question 0

For two independent samples you use the equation

Square subtract square root for difference

Answer 0

False you square add and square root

Question 1

The number of degrees of freedom of the two sample t test are the same as the degrees of freedom for a paired t test

Answer 1

False different equations
1sample- n-1
2sample is way bigger equation

Question 2

The p value of an upper tail t test is the area to the left of the calculated t value on the appropriate t curve

Answer 2

False it is the area to the right

Question 3

Two samples are said to be independent when the selection of the individuals in one sample has no bearing on the selection of those in the other sample

Answer 3

True

Question 4

Xd and X1-X2 are always equal

Answer 4

False
You could subtract it an other way
X2-X1

Question 5

Type 1 error is

Answer 5

Reject the Ho when you shouldn’t have

Question 6

Type 2 error is

Answer 6

When you fail to reject the Ho when you shouldn’t have

Question 7

Can you pove a null hypothesis true

Answer 7

No you can’t false

Question 8

Standard deviation should go down as n get bigger

Answer 8

True

Question 9

For normal curve z score you use

Answer 9

Normal cdf

Question 10

For t and degrees

Of freedom curve you use t test

Answer 10

T cdf