1. For each of the following patterns of data,
• What is the probability of the researcher having made a Type 1 error?
• What is the probability of the researcher having made a Type 2 error?
• Should the null hypothesis be rejected?
• What conclusions can be drawn about the possibility of the researcher having drawn a statistically invalid conclusion?
2. A friend of yours reports a study that obtains a p-value of .02. What can you conclude about the finding? List two other pieces of information that you would need to know to fully interpret the finding.