A mathematics instructor at a large university has determined that a student's probability of success in the pass/fail algebra course is a function of s, n, and a, where s is the student's score on the departmental placement exam, n is the number of semesters of mathematics passed in high school, and a is the student's mathematics SAT score. The instructor estimates that p, the probability of passing the course (in percent), will be 1/2 p=f(s,n,a)=0.078a+ 4(sn)" for 200 ≤a ≤ 800, 0≤s≤ 10, and 0≤n≤8. Assume that this model has some merit. Complete parts a - c below. a. If a student scores 8 on the placement exam, has taken 5 semesters of high school math, and has an SAT score of 450, what is the probability that the student will pass the course? The probability is s%. (Round to the nearest percent as needed.) b. Find p for a student with 3 semesters of high school mathematics, a placement score of 4, and an SAT score of 300. p= % (Round to the nearest percent as needed.) c. Find and interpret f (4,3,300) and f (4,3,300). d-a X lent fn(4,3,300) ulus unct x.y)= es le (Type an integer or a decimal. Round to the nearest tenth as needed.) fa (4,3,300) (Type an integer or a decimal. Round to the nearest tenth as needed.). Choose the correct interpretation below of f (4,3,300) = A. 4 OA. If a student has taken 3 semesters of math, his score on the departmental exam is a 4, and his SAT score is 300, then the probability that he will pass the algebra course is A%.
A mathematics instructor at a large university has determined that a student's probability of success in the pass/fail algebra course is a function of s, n, and a, where s is the student's score on the departmental placement exam, n is the number of semesters of mathematics passed in high school, and a is the student's mathematics SAT score. The instructor estimates that p, the probability of passing the course (in percent), will be 1/2 p=f(s,n,a)=0.078a+ 4(sn)" for 200 ≤a ≤ 800, 0≤s≤ 10, and 0≤n≤8. Assume that this model has some merit. Complete parts a - c below. a. If a student scores 8 on the placement exam, has taken 5 semesters of high school math, and has an SAT score of 450, what is the probability that the student will pass the course? The probability is s%. (Round to the nearest percent as needed.) b. Find p for a student with 3 semesters of high school mathematics, a placement score of 4, and an SAT score of 300. p= % (Round to the nearest percent as needed.) c. Find and interpret f (4,3,300) and f (4,3,300). d-a X lent fn(4,3,300) ulus unct x.y)= es le (Type an integer or a decimal. Round to the nearest tenth as needed.) fa (4,3,300) (Type an integer or a decimal. Round to the nearest tenth as needed.). Choose the correct interpretation below of f (4,3,300) = A. 4 OA. If a student has taken 3 semesters of math, his score on the departmental exam is a 4, and his SAT score is 300, then the probability that he will pass the algebra course is A%.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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