The marketing division of an orange plantation argues that in one loo: of oranges the average weight is 4D kg I box. To test this argument. 54 boxes were taken randomly as samples with an average weight of 39 kg :' box with a standard deviation of 1 kg. Try to prove the statement with a = 1% with an alternative less than the assumption. An LSF'R student conducted research to test math skills in public schools in Bogor and "r'ogvakarla. A study was conducted and a sample of 450 people was taken for 505?}: for both cities. The results of his research show that Bogor gets i'S with S = 2.5 and Yogvakarta gets ?8 with S = 1. Try to prove the hypothesis with a = 1s