A criminology professor wants to estimate the population mean performance for her current class of 25 students. The average this semester was 84 with a standard deviation of 12.6. In the past, the average performance in the class was a 78.5. Test the null hypothesis that the current class is the same as the previous classes against the alternative hypothesis that this current semester has students who are genuinely smarter (interpret as "higher than"). What do you conclude? Use an alpha level of 0.01. What is your alternative hypothesis?

Group of answer choices

H₁: > 84

H₁: < 78.5

H₁: > 78.5

H₁: < 84