A health psychologist is interested in a new kind of exercise. This new exercise can be done by anyone because it does not require any equipment, and therefore could be potentially beneficial without cost to the person. The psychologist is interested in whether this new exercise will reduce the rate of heart attacks in the people who use the exercise. What is the "cutoff on the comparison distribution"? The point at which the null hypothesis is accepted if the result is more extreme. The point at which, assuming the null hypothesis is true, it would be extremely unlikely to get a result this extreme. The point at which, assuming the research hypothesis is true, it would be extremely unlikely to get a result this extreme. The point at which the comparison distribution ends. Question 12 1 pts What is the argument for using a one-tailed test when there is a clear basis for predicting a result in a specific direction? If the result is opposite to the prediction, a two-tailed test can still be conducted later. The underlying mathematics of one-tailed tests are more accurate. A specific theory is being tested, and if the results are opposite from the theory, a one-tailed test adds no more information than if the result had not been significant. A one-tailed test is more conservative in that it is more difficult to reject the null hypothesis. Decision errors are possible in hypothesis testing because decisions are being made about based on information from samples; populations populations; samples distributions; Z tables distributions; frequency tables A clinical psychologist is interested in the effect of a terrorist attack on the attitude of police officers about the goodness of people in New York City. After the attack, police may hold more positive attitudes about people (because of various acts of heroism and altruism exhibited by residents) or more negative attitudes because of negative outcomes (looting and dishonesty after the event). What type of hypothesis should the researcher state? Quantifiable Significant Directional Nondirectional