Nan compos-mentis, a technical consultant, claims that she can increase average hourly productivityfor the fabricators at stryker manufacturing by more than 10 units per worker. to support her claim, nan plans to select a sample of workers, provide the workers in the sample with special training, and then use results from the sample in a hypothesis test designed to establish whether the training has had the desired effect. what null and alternative hypotheses would you recommend here?

H o: u ≤ 10      H α: u > 10

Explanation:

Since the researcher would like to increase the average hourly productivity by more than 10 units. Therefore, the alternative hypothesis which is H α would be greater than 10. Whereas, after going through the test, if the test scores are greater than the significance level then the null hypothesis is rejected which states that it would be less than 10 units. Which the researcher would want to disapprove.  

answerembargo;

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.