The probability that an entering college student will graduate is 0.6. Determine the probability that out of 10 students
a) At least one will be graduated.
b) Find the mean of graduating student.
Answers
Answered by
2
a- 0.6/10
b-0.6*n/20
Step-by-step explanation:
Hope the answer might be correct...hope it helps u
Answered by
0
Answer:
Probability that α student graduates=0.4
(i) Probability that none of 3 students graduate=(1−0.4)×(1−0.4)×(1−0.4)
Probability that student (1) doesn't graduate
⇒0.6×0.6×0.6
⇒0.216
∴ Probability that none of 3 students graduate=0.216
(ii) The only one will graduate.
we select one of 3 in
3
C
1
ways
his probability of passing =0.4
remaining two fail⇒0.6×0.6
probability =
3
C
1
×(0.4)×(0.6)×(0.6)
=3×0.4×0.36
Probability that only one will graduate⇒0.432
(iii) Probability that all students graduate=(0.4)(0.4)(0.4)
=0.064
∴ Probability that all will graduate=0.064.
Step-by-step explanation:
follow me
Similar questions