3. The two most common type of errors made by programmers are syntax errors and errors in logic. For a simple language such as BASIC the number of such errors is usually small. Let X denote the number of syntax errors and Y the number of errors in logic made on the first run of a BASIC program. Assume that the joint density for (X,Y) is as shown in table 2: x/y 2 .400 .100 .020 .005 1 300 .040 .010 .004 .040 .010 .009 .003 3 .009 .008 .007 .003 4 .008 .007 .005 .002 .001 5 a. Find the probability that a randomly selected program will have neither of these types of error. b. Find the probability that a randomly selected program will contain at least one syntax error and at most one error of logic. c. Find the marginal densities for X and Y .005 .002 .002
3. The two most common type of errors made by programmers are syntax errors and errors in logic. For a simple language such as BASIC the number of such errors is usually small. Let X denote the number of syntax errors and Y the number of errors in logic made on the first run of a BASIC program. Assume that the joint density for (X,Y) is as shown in table 2: x/y 2 .400 .100 .020 .005 1 300 .040 .010 .004 .040 .010 .009 .003 3 .009 .008 .007 .003 4 .008 .007 .005 .002 .001 5 a. Find the probability that a randomly selected program will have neither of these types of error. b. Find the probability that a randomly selected program will contain at least one syntax error and at most one error of logic. c. Find the marginal densities for X and Y .005 .002 .002
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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