DrScott Finds a Correlation Coefficient of

question 5

Multiple Choice

Dr.Scott finds a correlation coefficient of +.73 between Variable H and Variable J.Which of the following is NOT a possible source of the correlation?

• A) When people do a lot of Variable H,they are less likely to do Variable J.
• B) Variable H causes Variable J.
• C) Variable J causes Variable H.
• D) Variables H and J are both caused by a third variable.

Grasp the effect of sample size on the standard error of the difference and t-statistic values.

Apply the t-test appropriately to various research scenarios.

Understand the assumptions and conditions such as normality and equality of variances for performing a t-test for independent means.

Recognize how the choice of alpha level influences hypothesis testing and understand the reasons for adjusting it.

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