Single Samples T Test

Question 1

Which sampling distribution is modelled: single sample

Answer 1

sampling distribution of the mean (similar to z tests)

Question 2

Which sampling distribution is modelled: paired samples

Answer 2

sampling distribution of the mean difference

Question 3

Which sampling distribution is modelled: independent samples

Answer 3

sampling distribution of the difference between two group means

Question 4

What does df represent?

Answer 4

Number of scores that are free to vary in calculate in the statistic

Question 5

explain and identify situations when the t test is the appropriate statistical test to use.

Question 6

describe features of the sampling distributions modeled by t.

Question 7

generate a null hypothesis for a single sample and paired sample t test.

Answer 7

Single sample:
* H0: U1 = U2

Paired sample:
* H0: |mT1 - mT2|
* H0: mD = 0

Question 8

compare and contrast the formulas for zobtained and tobtained.

Answer 8

• Differ in their denominators: z = o (population standard error), t = sm (ESTIMATED standard error)