The question is saying that a given model of microwave oven has a mean life of 8.3 years. An improved prototype of this model is produced, and a sample of 33 has a mean life of 9.2 years with a standard deviation of 1.5 years. At a = 0.01, test the claim that the new prototype has a longer life than 8.3 years.

2. A given model of microwave oven has a mean life of 8.3 years. An improved prototype of this model is produced, and a sample of 33 has a mean life of 9.2 years with a standard deviation of 1.5 years. At a = 0.01, test the claim that the new prototype has a longer life than 8.3 years. a. Mean OR Proportion problem? b. Is this a one sample problem OR a two sample problem? c. Explain how the assumptions (or requirements) are met. d. Appropriate parameters : For Proportion problems: provide {5 , x and n For Means problems: provide :2, n and sx (whether one or two samples) e. Hypotheses H0: H1: f. Run the test: t or z stat: p-value = g. Conclusion: h. Interpret the conclusion: i. Based on the test, would you recommend the new model to a consumer