The data has been collected for course evaluation at a university. A sample of 36 students in one class showed the mean evaluation of 3.71 and standard deviation of 0.53. Use the 0.05 significance level. What is the null hypothesis for this hypothesis test?
1) The null hypothesis is that the mean evaluation is equal to 3.71.
2) The null hypothesis is that the mean evaluation is not equal to 3.71.
3) The null hypothesis is that the mean evaluation is greater than 3.71.
4) The null hypothesis is that the mean evaluation is less than 3.71.