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9. Bags of a certain brand of tortilla chips claim to have a net weight of 14 ounces. The net weights are normally distributed. A representative of a consumer advocacy group wishes to see if there is any evidence that the mean net weight is less than advertised. For this, the representative randomly selects 16 bags of this brand and determines the net weight of each. He finds the sample mean to be 13.82. Assume the population standard deviation to be 0.25. Use these data to perform an appropriate test of hypothesis at 5% significance level. (15 pts) Given: Ho: H = 14 H1:M