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Louis Reasoner has noticed that apply-generic may try to coerce the arguments to each other's type even if they already have the same type. Therefore, he reasons, we need to put procedures in the coercion table to "coerce" arguments of each type to their own type. For example, in addition to the scheme-number->complex coercion shown above, he would
a. With Louis's coercion procedures installed, what happens if apply-generic is called with two arguments of type scheme-number or two arguments of type complex for an operation that is not found in the table for those types? For example, assume that we've defined a generic exponentiation operation: (define (exp x y) (apply-generic 'exp x y)) and have put a procedure for exponentiation in the Scheme-number package but not in any other package:
What happens if we call exp with two complex numbers as arguments? b. Is Louis correct that something had to be done about coercion with arguments of the same type, or does apply-generic work correctly as is?c. Modify apply-generic so that it doesn't try coercion if the two arguments have the same type
"Use the data in the following payoff matrix and regret matrix to answer the following questions. What is the optimal decision regarding at which location(s) to purchase property using the MAXIMIN decision rule?
The mean time for the completion of a shopping center is estimated to be 14 months with standard deviation = 4 months. What is the probability that the renters will not be able to move in 19 months?
In a two-tailed test, with n = 20, the computed value of t is found to be t* = 1.85. Assuming the sample is randomly selected from a normal population, then the p-value is given by:
Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.7, 1). The second goes from (0.7, 1) to (0.9, 2) in the xy-plane. What percent of observations fall below 0.70?
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about null hypothesis, and final conclusion that addresses the original claim.
the management of red cat computers was considering launching a new product called the tiger 100. the problem was that
Is there evidence that a stock split causes excess returns for the month following the split? Redo the problem, using the sign test. Compare the results of the sign test with those of the Wilcoxon test.
Verify that middle class families allocate a statistically larger average amount on food than poor families using the firm's data. Use a 5% significance level in your verification.
Is the threat of being shot by a hunter. Hazards associated with hunters. Then why is hunting allowed? Suits in the deep woods?
What must be the probability that a randomly chosen young adult has some education beyond high school but does not have a bachelor's degree? What is the probability that a randomly chosen young adult has at least a high school education?
QModify your reverse procedure of exercise 2.18 to produce a deep-reverse procedure that takes a list as argument and returns as its value the list with its elements reversed and with all sublists deep-reversed as well. For example,
security screening lines at hartsfield-jackson atlanta international airport are often long. the average time a
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