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Discrete Mathematics With Applications
5th Edition
ISBN: 9781337694193
Author: EPP, Susanna S.
Publisher: Cengage Learning,
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Textbook Question
Chapter 3.4, Problem 2TY
If the first two premises of universal modus ponens are written as “If x makes P(x) true, then x makes Q(x) true” and “For a particular value of a _____” then the conclusion can be written as “____”.
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To compare two elementary schools regarding teaching of reading skills, 12 sets of identical twins were used. In each case, one child was selected at random and sent to school A, and his or her twin was sent to school B. Near the end of fifth grade, an achievement test was given to each child. The results follow:
Twin Pair
1
2
3
4
5
6
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169
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123
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Twin Pair
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8
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10
11
12
School A
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School B
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Suppose a sign test for matched pairs with a 1% level of significance is used to test the hypothesis that the schools have the same effectiveness in teaching reading skills against the alternate hypothesis that the schools have different levels of effectiveness in teaching reading skills. Let p denote portion of positive signs when the scores of school B are subtracted from the corresponding scores of school…
A horse trainer teaches horses to jump by using two methods of instruction. Horses being taught by method A have a lead horse that accompanies each jump. Horses being taught by method B have no lead horse. The table shows the number of training sessions required before each horse performed the jumps properly.
Method A
25
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39
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Method B
41
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46
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24
44
Method A
45
35
27
31
34
49
Method B
26
43
47
32
40
Use a rank-sum test with a5% level of significance to test the claim that there is no difference between the training sessions distributions. If the value of the sample test statistic R, the rank-sum, is 150, calculate the P-value. Round your answer to four decimal places.
A data processing company has a training program for new salespeople. After completing the training program, each trainee is ranked by his or her instructor. After a year of sales, the same class of trainees is again ranked by a company supervisor according to net value of the contracts they have acquired for the company. The results for a random sample of 11 salespeople trained in the last year follow, where x is rank in training class and y is rank in sales after 1 year. Lower ranks mean higher standing in class and higher net sales.
Person
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x rank
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y rank
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Person
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y rank
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Using a 1% level of significance, test the claim that the relation between x and y is monotone (either increasing or decreasing). Verify that the Spearman rank correlation coefficient . This implies that the P-value lies between 0.002 and 0.01. State…
Chapter 3 Solutions
Discrete Mathematics With Applications
Ch. 3.1 - If P(x) is a predicate with domain D, the truth...Ch. 3.1 - Some ways to express the symbol in words are .Ch. 3.1 - Some ways to express the symbol in words are .Ch. 3.1 - A statement of from xD , Q(x) is true if, and only...Ch. 3.1 - A statement of the form xD such that Q(x) is true:...Ch. 3.1 - A menagerie consists of seven brown dogs, two...Ch. 3.1 - Indicate which of the following statements are...Ch. 3.1 - Let R(m,n) be the predicate “If m is a factor if...Ch. 3.1 - Let Q(x,y) be the predicate “If xy then x2y2 ”...Ch. 3.1 - Find the truth set of each predicate. Predicate:...
Ch. 3.1 - Let B(x) be “ 10x10 .” Find the truth set of B(x)...Ch. 3.1 - Let S be the set of all strings of length 3...Ch. 3.1 - Let T be the set of all strings of length 3...Ch. 3.1 - Find counterexamples to show that the statements...Ch. 3.1 - Find counterexamples to show that the statements...Ch. 3.1 - Find counterexamples to show that the statements...Ch. 3.1 - Find counterexamples to show that the statements...Ch. 3.1 - Consider the following statement: basketball...Ch. 3.1 - Consider the following statement: xR such that...Ch. 3.1 - Rewrite the following statements informally in at...Ch. 3.1 - Rewrite each of the following statements in the...Ch. 3.1 - Rewrite each of the following in the form “ _____...Ch. 3.1 - Let D be the sat of all students at your school,...Ch. 3.1 - Consider the following statement: integer n, if...Ch. 3.1 - Rewrite the following statement informally in at...Ch. 3.1 - Prob. 21ESCh. 3.1 - Rewrite each of the following statements in the...Ch. 3.1 - Rewrite each of the following statements in the...Ch. 3.1 - Rewrite the following statements in the two forms...Ch. 3.1 - The statement “The square of any rational number...Ch. 3.1 - Consider the statement “All integers are rational...Ch. 3.1 - Refer to the picture of Tarski’s world given in...Ch. 3.1 - In 28-30, rewrite each statement without using...Ch. 3.1 - Let the domain of x be the set of geometric...Ch. 3.1 - Let the domain of x be Z, the set of integers, and...Ch. 3.1 - In any mathematics or computer science text other...Ch. 3.1 - Let R be the domain of the predicate variable x....Ch. 3.1 - Prob. 33ESCh. 3.2 - A negation for “All R have property S” is “There...Ch. 3.2 - A negation for “Some R have property S” is...Ch. 3.2 - A negation for “For every x, if x has property P...Ch. 3.2 - The converse of “For every x, if x has property P...Ch. 3.2 - The contrapositive of “For every x, if x has...Ch. 3.2 - The inverse of “For every x, if x has property P...Ch. 3.2 - Which of the following is a negation for “All...Ch. 3.2 - Which of the following is a negation for “All dogs...Ch. 3.2 - Write a formula negation for each of the following...Ch. 3.2 - Write an informal negation for each of the...Ch. 3.2 - Write a negation for each of the following...Ch. 3.2 - Write a negation for each statement in 6 and 7....Ch. 3.2 - Write a negation for each statement in 6 and 7....Ch. 3.2 - Consider the statement “There are no simple...Ch. 3.2 - Write negation for each statement in 9 and 10. ...Ch. 3.2 - Write a negation for each statements in 9 and 10. ...Ch. 3.2 - In each of 11-14 determine whether the proposed...Ch. 3.2 - In each of 11-14 determine whether the proposed...Ch. 3.2 - Prob. 13ESCh. 3.2 - Prob. 14ESCh. 3.2 - Prob. 15ESCh. 3.2 - In 16-23, write a negation for each statement. ...Ch. 3.2 - In 16-23, write a negation for each statement. ...Ch. 3.2 - Prob. 18ESCh. 3.2 - In 16-23, write a negation for each statement. nZ...Ch. 3.2 - Prob. 20ESCh. 3.2 - Prob. 21ESCh. 3.2 - In 16-23, write a negation for each statement. If...Ch. 3.2 - In 16-23, write a negation for each statement. If...Ch. 3.2 - Prob. 24ESCh. 3.2 - Prob. 25ESCh. 3.2 - In 26-33, for each statement in the referenced...Ch. 3.2 - In 26-33, for each statement in the referenced...Ch. 3.2 - Prob. 28ESCh. 3.2 - In 26-33, for each statement in the referenced...Ch. 3.2 - Prob. 30ESCh. 3.2 - In 26-33, for each statement in the referenced...Ch. 3.2 - In 26-33, for each statement in the referenced...Ch. 3.2 - In 26-33, for each statement in the referenced...Ch. 3.2 - Prob. 34ESCh. 3.2 - Give an example to show that a universal condition...Ch. 3.2 - If P(x) is a predicate and the domain of x is the...Ch. 3.2 - Consider the following sequence of digits: 0204. A...Ch. 3.2 - True or false? All occurrences of the letter u in...Ch. 3.2 - Prob. 39ESCh. 3.2 - Rewrite each statement of 39-44 if-then form....Ch. 3.2 - Rewrite each statement of 39-44 if-then form....Ch. 3.2 - Rewrite each statement of 39-44 if-then form....Ch. 3.2 - Rewrite each statement of 39-44 in if-then form. A...Ch. 3.2 - Rewrite each statement of 39-44 in if-then form. A...Ch. 3.2 - Prob. 45ESCh. 3.2 - Use the facts that the negation of a STATEMENT IS...Ch. 3.2 - Prob. 47ESCh. 3.2 - Use the facts that the negation of STATEMENT IS A...Ch. 3.2 - The computer scientist Richard Conway and David...Ch. 3.2 - A frequent-flyer club brochure stares, “you may...Ch. 3.3 - To establish the truth of a statement of the form...Ch. 3.3 - Prob. 2TYCh. 3.3 - Prob. 3TYCh. 3.3 - Consider the statement “ x such that y , P(x,y), a...Ch. 3.3 - Prob. 5TYCh. 3.3 - Prob. 1ESCh. 3.3 - Let G(x,y) be “ x2y .” Indicate which of the...Ch. 3.3 - The following statement is true: “ nonzero number...Ch. 3.3 - The following statement is true: “ real number x,...Ch. 3.3 - Prob. 5ESCh. 3.3 - The statements in exercise 5-8 refer to the Tarski...Ch. 3.3 - Prob. 7ESCh. 3.3 - This statements is exercised 5-8 refer to the...Ch. 3.3 - Prob. 9ESCh. 3.3 - This exercise refers to Example 3.3.3. Determine...Ch. 3.3 - Let Sbe the set of students at your school, let M...Ch. 3.3 - Let D = E ={-2,-1,0,1,2}. Write negations for each...Ch. 3.3 - Prob. 13ESCh. 3.3 - Prob. 14ESCh. 3.3 - Prob. 15ESCh. 3.3 - Prob. 16ESCh. 3.3 - Prob. 17ESCh. 3.3 - Prob. 18ESCh. 3.3 - Prob. 19ESCh. 3.3 - Recall that reversing that order of the...Ch. 3.3 - For each of following equators, determinewhich of...Ch. 3.3 - Prob. 22ESCh. 3.3 - In 22 and 23, rewrite each statement without using...Ch. 3.3 - Prob. 24ESCh. 3.3 - Each statement in 25—28 refers to Tarski world of...Ch. 3.3 - Each statement in 25—28 refers to Tarski world of...Ch. 3.3 - Prob. 27ESCh. 3.3 - Prob. 28ESCh. 3.3 - Prob. 29ESCh. 3.3 - Prob. 30ESCh. 3.3 - Prob. 31ESCh. 3.3 - Prob. 32ESCh. 3.3 - Prob. 33ESCh. 3.3 - In 33-39(a) rewrite the statement formally using...Ch. 3.3 - In 33-39(a) rewrite the statement formally using...Ch. 3.3 - In 33-39(a) rewrite the statement formally using...Ch. 3.3 - In 33-39(a) rewrite the statement formally using...Ch. 3.3 - In 33-39(a) rewrite the statement formally using...Ch. 3.3 - Prob. 39ESCh. 3.3 - Prob. 40ESCh. 3.3 - Indicate which of the following statements are...Ch. 3.3 - Write the negation of the definition of limit of a...Ch. 3.3 - The following is the definition for limxaf(x)=L ....Ch. 3.3 - The notation ! stands for the words “There exists...Ch. 3.3 - Suppose that P(x) is a predicate and D is the...Ch. 3.3 - In 46—54, refer to the Tarski world given in...Ch. 3.3 - Prob. 47ESCh. 3.3 - Prob. 48ESCh. 3.3 - In 46—54, refer to the Tarski world given in...Ch. 3.3 - In 46—54, refer to the Tarski world given in...Ch. 3.3 - Y13In 46—54, refer to the Tarski world given in...Ch. 3.3 - Prob. 52ESCh. 3.3 - Prob. 53ESCh. 3.3 - Prob. 54ESCh. 3.3 - Let P(x)and Q(x) be predicates and suppose D is...Ch. 3.3 - Let P(x) and Q(x) be predicates and suppose D is...Ch. 3.3 - Let P(x) and Q(x) be predicates and suppose D is...Ch. 3.3 - Let P(x) and Q(x) be predicates and suppose D is...Ch. 3.3 - Prob. 59ESCh. 3.3 - In 59-61, find the answers Prolog would give if...Ch. 3.3 - Prob. 61ESCh. 3.4 - The rule of universal instantiation says that if...Ch. 3.4 - If the first two premises of universal modus...Ch. 3.4 - Prob. 3TYCh. 3.4 - If the first two premised of universal...Ch. 3.4 - Prob. 5TYCh. 3.4 - Prob. 1ESCh. 3.4 - Prob. 2ESCh. 3.4 - Prob. 3ESCh. 3.4 - real numbers r, a, and b, if b, if r is positive,...Ch. 3.4 - Prob. 5ESCh. 3.4 - Prob. 6ESCh. 3.4 - Some of the arguments in 7-18 are valid by...Ch. 3.4 - Prob. 8ESCh. 3.4 - Prob. 9ESCh. 3.4 - Prob. 10ESCh. 3.4 - Some of the arguments in 7—18 are valid by...Ch. 3.4 - Some of the arguments in 7—18 are valid by...Ch. 3.4 - Some of the arguments in 7-18 are valid by...Ch. 3.4 - Some of the arguments in 7-18 are valid by...Ch. 3.4 - Some of the arguments in 7-18 are valid by...Ch. 3.4 - Some of the arguments in 7-18 are valid by...Ch. 3.4 - Prob. 17ESCh. 3.4 - Some of the arguments in 7-18 are valid by...Ch. 3.4 - Rewrite the statement “No good cars are cheap” in...Ch. 3.4 - Use a diagram to shoe that the following argument...Ch. 3.4 - Indicate whether the arguments in 21-27 are valid...Ch. 3.4 - Indicate whether the arguments in 21-27 are valid...Ch. 3.4 - Prob. 23ESCh. 3.4 - Indicate whether the arguments in 21-27 are valid...Ch. 3.4 - Prob. 25ESCh. 3.4 - Prob. 26ESCh. 3.4 - Prob. 27ESCh. 3.4 - In exercises 28-32, reorder the premises in each...Ch. 3.4 - In exercises 28-32, reorder the premises in each...Ch. 3.4 - In exercises 28-32, reorder the premises in each...Ch. 3.4 - Prob. 31ESCh. 3.4 - In exercises 28-32, reorder the premises in each...Ch. 3.4 - Prob. 33ESCh. 3.4 - In 33 and 34 a single conclusion follows when all...Ch. 3.4 - Prob. 35ESCh. 3.4 - Derives the validity of universal form of part(a)...
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