A researcher is interested in determining whether or not review sessions affect exam performance. A review session is administered to a sample of 105 students in an attempt to determine if this has an effect on exam performance (mean = 78.7 with a standard deviation of 5.7). Based on information gathered in previous semesters when no review sessions were provided, the population mean for a given exam is 84.9. O One-sample t test O Independent-samples t test O Chi-square test of independence Chi-square goodness-of-fit test O Simple linear regression O ANOVA