COMMERCE 2QA3 Lecture 12: 12___
17 Dec 2015
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Was the additional training effective in lowering the defect rate: write the null and alternative hypotheses. Answer: h0 : p = 0. 08 and ha : p < 0. 08. : 2: state your conclusion using = 0. 01. Answer: at = 0. 01 we fail to reject the null hypothesis. At the 0. 01 level of significance, we cannot conclude that the additional training significantly lowered the defect rate. The company decides to do so but in a test market so that the effectiveness of the marketing campaign may be evaluated: write the null and alternative hypotheses. Answer: h0 : p = 0. 195 and ha : p > 0. 195. 1: in this context, describe the type i error possible. Answer: a type i error would be concluding that the percentage of customers purchasing the company"s brand has increased, when in fact it has not.
