Question

1.If you have small sample size, you can conduct one-sample t-test when ______.

the population distribution is normal

the sample mean is unknown

the sample mean is closer to the population mean

the sample standard deviation is sufficiently large

13.Which research question below is appropriate for a related-samples t test?

to compare the level of honesty (based on an honesty scale) in politicians to the level of honesty in students

to compare the level of sat scores at the beginning of a preparation class to their sat scores at the end of the class

to examine the association between liking for energy drinks and tendency to be a “morning person” among a group of students

to compare the scores on a optimism measure between two universities

17. You conduct a paired-samples t test in exactly the same way as a one-sample t test, except that you use something called ______.

difference scores

the pooled variance

variance of the dependent means

within-subjects variance

19.A research article reports results of a study using a related-samples t test as “t(38) = 2.13, p = .04.” This tells you that ______.

a one-tailed test was used

there were 40 participants in this study

the result is not statistically significant

the result is statistically significant at .05 level

29.Since we have two samples in a study, we will have two estimated standard errors to calculate.

True

False

30.The hypothesis testing process is the same for one-sample and independent-samples t tests.

True

False

38.You will conduct a post hoc test when ______.

you suspect two of your sample means are different from each other

your main effect is not significant

your main effect is significant.

you suspect one of your sample means is different from other samples

39.Using multiple t tests to compare means from more than two groups inflates Type 1 error rate of a study.

True

False

Answer 1

1.If you have small sample size, you can conduct one-sample t-test when ______.

the population distribution is normal

2.Which research question below is appropriate for a related-samples t test?

to compare the level of sat scores at the beginning of a preparation class to their sat scores at the end of the class

3.You conduct a paired-samples t test in exactly the same way as a one-sample t test, except that you use something called ______.

the pooled variance

4.A research article reports results of a study using a related-samples t test as “t(38) = 2.13, p = .04.” This tells you that ______.

there were 40 participants in this study

5.Since we have two samples in a study, we will have two estimated standard errors to calculate.

True

6.The hypothesis testing process is the same for one-sample and independent-samples t tests.

False

7.You will conduct a post hoc test when ______.

you suspect two of your sample means are different from each other

8.Using multiple t tests to compare means from more than two groups inflates Type 1 error rate of a study.

True

please rate my answer and comment for doubts.