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%.
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Transcribed Image Text: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
p=f(s,n,a) = 0.078a +4(sn)1/2
for 200 ≤a ≤ 800, 0≤s≤ 10, and 0≤n≤8. Assume that this model has some merit. Complete parts a - c below.
(Type an integer or a decimal. Round to the nearest tenth as needed.)
Choose the correct interpretation below of f(4,3,300) = A.
(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%.
nd-a
ex
dent
OB. If a student has taken 3 semesters of math and and his score on the departmental exam is a 4, increasing his SAT score by 10 points would increase his
probability of passing the algebra course by 10A%.
culus
funct
F(x.y)=
OC. If a student has taken 3 semesters of math and then takes a 4th semester of math, while his score on the departmental exam remains a 4, and his SAT
score stays at 300, then the probability that he will pass the algebra course will increase by A%.
Choose the correct interpretation below of f(4,3,300) = B.
OA. If a student has taken 3 semesters of math and she increases her score on the departmental exam from a 4 to a 5 while her SAT score stays at 300, her
probability of passing the algebra course will increase by B%.
ses lec
the Ge
Xx0) + fy
the point
OB. If a student has taken 3 semesters of math and her score on the departmental exam is a 4, increasing her SAT score by 10 points would increase her
probability of passing the algebra course by 10B %.
OC. If a student has taken 3 semesters of math and her score on the departmental exam is a 4, increasing her SAT score from 300 to 310 would increase her
probability of passing the algebra course by B%.
O
Next
4:07 AM
7/15/2022

Transcribed Image Text: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%. (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
ulus
unct
_x.y)=
fn (4,3,300)~
(Type an integer or a decimal. Round to the nearest
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.
es lec
he Ge
x0) + fy
needed.)
e point
(...)
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%.
Next
(1)
D
4:07 AM
7/15/2022
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