3.1) Find the probability of randomly selecting one student from this group who
pays for him/herself?
(2)
3.2) Find the probability of randomly selecting one student from this group who
has a Diploma or a Degree?
(4)
3.3 Find the probability of randomly selecting one student from this group who
has a Bursary or Degree?
(4)
3.4 What is the chance of randomly selecting one student with a degree, given
that this student has a loan?
(5)
QUESTION 4
r 13 l
The numbers of vehicles (X) sold per day at a local dealership in Namibia are given below.
X
P(X)
0
1
2
3
4
5
0.5
0.2
0.1
0.1
0.06
0.04
4.1) Find the probability that at most four cars will be sold tomorrow.
(3)
4.2) Find the probability that fewer than four cars will be sold tomorrow.
(3)
4.3) Determine the average number of cars sold.
(2)
4.4) Determine the standard deviation of the number of cars sold.
(5)
QUESTION 5
The student marks from the first ASP601S class test in 2017 were compiled and summarized.
Over the years, it is known from previous tests that the marks are normally distributed with
a mean of 45 and a standard deviation of 4.2.
5.1) What is the probability that a randomly chosen student scored a mark above 50? [4]
5.2) What is the probability that the test mark will be between 40 and 45?
[5]
5.3) If 500 students wrote the test, how many will score a mark above 50?
[2]
3