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9. Ben Bitdiddle, Alyssa P. Hacker, and Eva Lu Ator are arguing about the desired result of evaluating the expression
Ben asserts that the result should be obtained using the sequential rule for define: b is defined to be 11, then a is defined to be 5, so the result is 16. Alyssa objects that mutual recursion requires the simultaneous scope rule for internal procedure definitions, and that it is unreasonable to treat procedure names differently from other names. Thus, she argues for the mechanism implemented in exercise 4.16. This would lead to a being unassigned at the time that the value for b is to be computed. Hence, in Alyssa's view the procedure should produce an error. Eva has a third opinion. She says that if the definitions of a and b are truly meant to be simultaneous, then the value 5 for a should be used in evaluating b. Hence, in Eva's view a should be 5, b should be 15, and the result should be 20. Which (if any) of these viewpoints do you support? Can you devise a way to implement internal definitions so that they behave as Eva prefers?
a consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. the magazine takes a
Explain the decisions you made in the third cycle of the simulation. State the reasons for your decision and include an explanation of why you did not follow the recommendations of the stakeholders.
a group of n men and m women is randomly lined up. find the expected number of men who are next to at least one woman.
Sketch the distributions involved, and (c) explain your answer to someone who is familiar with the t test for a single sample but not with the t test for independent means.
A new weight-watching company, Weight Reducers International, advertises that those who join will lose, on the average, 10 pounds the first two weeks with a standard deviation of 2.8 pounds
What is the importance of the null hypothesis? Why has it been the backbone of mainstream hypothesis testing for decades? What are its limitations?
a certain city divides naturally into ten district neighborhoods. how might a real estate appraiser select a sample of
Use the information given to calculate the standard error of the mean. Mean systolic blood pressure for a sample of n=324 men is =123.5, and the standard deviation is s=9.
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
a person leaves for work between 8 am and 8.30 am and takes between 40 and 50 minutes to get there. let the random
what differentiates ratio data from data that are only
Find the p-value of the test of the hypothesis that mileage is not affected by the additive when the sign test is used;
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