Hypothesis Testing
Psychology ⇒ Research Methods in Psychology
Hypothesis Testing starts at 11 and continues till grade 12.
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See sample questions for grade 12
A psychologist sets alpha at 0.05. What does this mean in terms of risk of error?
A psychologist tests whether a new therapy reduces anxiety. The null hypothesis states there is no effect. If the test statistic falls in the critical region, what should the psychologist do?
A researcher conducts a two-tailed test with alpha = 0.05. What is the probability of making a Type I error?
A researcher predicts that students who sleep at least 8 hours will score higher on a memory test than those who sleep less. What is the null hypothesis for this study?
A psychologist sets alpha at 0.05. What does this mean in terms of risk of error?
A psychologist tests whether a new therapy reduces anxiety. The null hypothesis states there is no effect. If the test statistic falls in the critical region, what should the psychologist do?
A researcher conducts a two-tailed test with alpha = 0.05. What is the probability of making a Type I error?
A researcher finds a p-value of 0.03 when alpha is set at 0.05. What should the researcher conclude? (1) Accept the null hypothesis, (2) Reject the null hypothesis, (3) Increase the sample size, (4) Repeat the experiment
A researcher finds a p-value of 0.03 when alpha is set at 0.05. What should the researcher conclude? (1) Accept the null hypothesis, (2) Reject the null hypothesis, (3) Increase the sample size, (4) Repeat the experiment
A researcher sets alpha at 0.01 instead of 0.05. What effect does this have on the likelihood of a Type I error? (1) Increases it, (2) Decreases it, (3) No effect, (4) Doubles it
A researcher wants to test if a new drug has any effect on reaction time. Which type of hypothesis test should be used? (1) One-tailed, (2) Two-tailed, (3) Paired, (4) None
Which of the following best describes a null hypothesis? (1) A statement predicting a difference, (2) A statement predicting no difference, (3) A statement predicting a relationship, (4) A statement predicting a cause
Fill in the blank: A Type I error occurs when a researcher _______ a true null hypothesis.
Fill in the blank: If the p-value is less than the significance level, we _______ the null hypothesis.
Fill in the blank: In hypothesis testing, the _______ is the range of values for which the null hypothesis is not rejected.
Fill in the blank: The _______ hypothesis is denoted as H₀.
True or False: A two-tailed test is used when the direction of the effect is not specified.
True or False: Failing to reject the null hypothesis means the null hypothesis is definitely true.
True or False: Increasing the sample size generally increases the power of a hypothesis test.
True or False: The alternative hypothesis is denoted as H₁ or Hₐ.
