A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.

Test at the .05 level of significance.

Set up the criteria for making a decision. That is, find the critical value using an

alpha = .05. (Make sure you are sign specific: + ; - ; or ) (Use your tables)

-1.645

1.645

2.756

2.064

2.064

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 93 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6. (Use these numbers only for this question!) What are the degrees of freedom? (numeric value only) A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 41.98. Random sampling of 81 scores obtained from individuals who were bullied yielded a mean of 43.81 and a standard deviation of 24.96. (Use these numbers only for this question!) What is the z-value or t-value you obtained (your test statistic)? (numeric value only, including negative sign if required)

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.

Test at the .05 level of significance.

The value of your calculated (obtained) test statistic is 6.74. What is your decision?

	reject the null hypothesis
	fail to reject the null hypothesis
	reject the alternative hypothesis

psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.

Test at the .05 level of significance.

The best conclusion for this example (based on your answer to Q8) would be

Being bullied does not significantly increase the amount of empathy expressed by individuals who were bullied when compared to the general population.

Being bullied does not significantly decrease the amount of empathy expressed by individuals who were bullied when compared to the general population.

There is no statistical difference in the amount of empathy expressed by individuals who were bullied when compared to the general population.

There is a statistical difference in the amount of empathy expressed by individuals who were bullied when compared to the general population.

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.

Test at the .05 level of significance.

Based on your evaluation of the null in Q8 and your conclusion is Q9, as a researcher you would be more concerned with a

	Type I statistical error
	Type II statistical error

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 61.95. Random sampling of 76 scores obtained from individuals who were bullied yielded a mean of 100.47 and a standard deviation of 22.87. (Use these numbers only for this question!) Calculate the 99% confidence interval. Steps: The mean you will use for this calculation is

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.

Calculate the 99% confidence interval.

Steps:

What is the new critical value you will use for this calculation?

	1.645
	2.064
	2.756
	2.797
	6.74