Assume that the 30 scores are the reading comprehension test scores of a grade 3 class in 2020. You want to determine whether the mean of this class that you obtained above is better than the mean of all the grade 3 classes during the past 5 years 2015- 2019. The mean was =5 with =2. Conduct the five step hypothesis test, using a two tailed with .05. Based on your calculation, is this year's grade 3 class average better than the average of the classes over the past five years? For this problem, you know the population standard deviation.

\f