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Question 5. [20 marks] During the 1980s, the general consensus is that about 5% of the nation's children had autism. Some claimed that increased certain chemicals in the environment has led to an increase in autism. (a). [5 marks ] Write an appropriate hypothesis test for this situation. (b). [5 marks ] Propose an appropriate test for this hypothesis, stating the test procedure. (0). [5 marks ] A recent study examined 384 children and found that 46 showed signs of autism. Perform your proposed test in (b) and calculate the pvalue. (d). [5 marks ] What is your conclusion? State how to get this conclusion