PART A AND B In a certain university, 52% of all students take a statistics clas
ID: 2925469 • Letter: P
Question
PART A AND B
In a certain university, 52% of all students take a statistics class, 23% take a computing course, and 7% take both. What percentage of students take at least one of computing or statistics? S = student takes statistics course S' = student does not take statistics course C student takes computing course C' = student does not take computing course Let: Which of the following statements identifies the probability this problem is asking you to compute? P(S nC) P(S U C) P (S) P(C) The edge roughness of slit paper products increases as knife blades wear. Only 1% of products slit with new blades have rough edges and 5% of products slit with worn blades exhibit roughness. If 25% of the blades in manufacturing are new, what is the proportion of products that exhibit edge roughness? R- edge of slit is rough R'-edge of slit is not rough N = blade is new N'-blade is not new (ie, blade is worn) Let: Which is the correct probability statement for the given probability of 1%? P(N) O P(R I N)Explanation / Answer
1. Atleast means events S OR C. . thus the correct option is B .
2. P(slit has rough edges), thus in this question we need to find proportion of products that exhibit edge roughness IF 25% blades are new. this is given by P(R|N) option D
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