The rector of a university states that the mean score obtained by second-year students is 22. The statistics professor suspects that the rector's statement is too low and selects a random sample of 121 second-year students, the sample mean is 23.3 and the population standard deviation is assumed to be 3.3.

1. The alternate hypothesis is:

____Ha: <22 ____ha:> 22 ____Ha: = 23.3 ____Ha: > 23.3 2. The test statistic is is:

___1.65 ___0.05 ___1.3 ___4.33 3. For a significance level of 5%, could it be concluded that the teacher is right ?:

__No, because the test statistic is less than the z of the table __No, because the test statistic is greater than the z of the table __Yes, because the test statistic is greater than the z of the table __Yes, because the test statistic is less than the z of the table