1)Which case below has the greatest likelihood of having a statistically significant result?

A study with a large sample and a large result

A study with a large sample and a small result

A study with a small sample and a small result

A study with a small sample and a large result

2)Which of the following is NOT a key step in testing a hypothesis?

Group of answer choices

Determine the critical value

Calculate the test statistic

Determine the proportion of the population that has been used in previous research

Apply a decision rule and interpret the result

3)Several examples are given below. Assume that in each the study was assessing whether there was a difference in happiness scores (on a scale of 1 to 10) between two groups. In which example below would there be the greatest likelihood of a statistically significant result in support of the hypothesis?

Group of answer choices

t(100) = -0.10

t(10) = 0.39

t(20) = 1.22

t(200) = -6.45

4)Assume you have a dataset with 100 people, each of whom reports his or her mean hours of sleep before and after taking a one-day sleep hygiene course.Of the following sentences, which MIGHT be true of the data and CORRECTLY uses APA format to report results?

Group of answer choices

An independent samples t-test showed that people had significantly different mean hours of sleep after a course compared to before, t(98) = 3.10, p < .05

A dependent samples t-test showed that people had significantly different mean hours of sleep after a course compared to before, t(99) = 2.43, p < .05

A dependent samples t-test showed that people had significantly different mean hours of sleep after a course compared to before, t(99) = 0.86, p > .05.

A dependent samples t-test showed that people did not have significantly different mean hours of sleep after a course compared to before, t(99) = 8.46, p > .05.

An independent samples t-test showed that people had significantly different mean hours of sleep after a course compared to before, t(99) = 0.50, p > .05.

5)A researcher is conducting an independent samples t-test of adirectional hypothesis. The sample size for the study is 25. What is the critical value that should be used to be 95% confident?

Group of answer choices

This cannot be determined without more information

2.060

1.714

2.069

1.708

6)A researcher is conducting a dependent samples t-test of a non-directional hypothesis. The sample size for the study is 20. What is the critical value that should be used to be 95% confident?

Group of answer choices

1.734

1.729

2.093

This cannot be determined from the information provided

2.086