Deck 22: Independent Samples T-Test

Question 1

If a researcher wanted to know if there was a statistical difference in test scores between athletes and non-athletics in a college history class, which of the following is NOT true?

A) This is a non-directional test
B) The alternative hypothesis is µ₁ > µ2
C) This is an Independence Samples t Test
D) The null hypothesis µ1 = µ2

Answer 1

B

Question 2

Which of the follow is true about an independent variable in an Independent Samples t Test?

A) It is the outcome variable
B) It is the categorical variable
C) It is a continuous variable
D) It is the independent samples

Answer 2

B

Question 3

Which of the following is NOT true about the following expression: µ₁ − µ₂ = 0 or µ1 = µ2?

A) The null hypothesis
B) The alternative hypothesis
C) The difference is due to sample error
D) There is no statistical difference between the two sample means

Answer 3

B

Question 4

Which of the following is NOT true about the standard error of the difference between means?

A) It is the average expected difference between two random samples from two different populations on a measurement
B) It is divided into the two independent sample means
C) It is same as standard error of the means
D) It decreases the likelihood of finding statistical significance

Question 5

The calculation of the standard error of the difference between means depends on all of the following EXCEPT?

A) Standard deviations of independent samples
B) Sample size of samples
C) Independent groups
D) Dependent groups

Question 6

What can you conclude from the following results: (t = 12.72, df = 98, p < .01, two-tailed test)?

A) The null hypothesis was rejected at the .01 level
B) The null hypothesis was not rejected at the .01 level
C) This was a directional hypothesis testing
D) That the total sample size was 98