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QUESTION ANSWERS
NUMBER
QUESTION 1
1
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What is the probability that Zodwa will win first prize? (2)

P(Zodwa) =

𝟓𝟎
𝟐𝟎𝟎

= 0,25
P
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97 Study Guide
1
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What is the possibility that MacGyver will win first prize? (2)

P(MacGyver) =

𝟑𝟎
𝟐𝟎𝟎

= 0,15
P
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97 Study Guide

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1
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If Zodwa wins first prize, what is the probability that MacGyver will win second prize?
(The person winning the first prize is not eligible to be selected for the second or third
prize
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4
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(2)
Zodwa= 50 nominations
MacGyver= 30 nominations
Total= 200 nominations
Since MacGyver won first prize, he is not eligible to be selected for the second or third prize,
therefore 200-30= 170 nominations

P(Zodwa) =

𝟓𝟎
𝟏𝟕𝟎

= 0,29

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96-97 Study Guide

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1
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What is the probability that Zodwa and MacGyver will win first and second prize,
respectively? (3)
P(Zodwa) x P(MacGyver)
𝟓𝟎
𝟑𝟎
=
x
𝟐𝟎𝟎

𝟏𝟓𝟎

= 0,25 x 0,2
= 0,05

P(MacGyver) x P(Zodwa)
𝟑𝟎
𝟓𝟎
=
x
𝟐𝟎𝟎

𝟏𝟕𝟎

= 0,15 x 0,29
= 0,04
P (Zodwa and MacGyver) = 0,05 + 0,04
=0,09

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96-97 Study Guide

QUESTION 2
2
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utilising the university library (X) and academic achievement (Y)
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2
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It is a moderate positive correlation
Page 70-71 Study Guide

2
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An increase in utilizing the university library, will also moderately increase student’s
academic achievement
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4
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5
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6
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7
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8
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1
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1
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2
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3
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1
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This
is the descriptive research approach
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Inferential statistics – a technique applied to samples in order to make inferences about
populations
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Inferential statics
include the linear regression analysis, analysis of variance (ANOVA), logit/Probit models
and null hypothesis testing
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2
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=Symmetry: The figure forms an exact mirror image on either side of the centre line
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Since the figure is symmetrical, it means that the area of the left-hand
half occupies 50% (or 0,5) and that of the right-hand half the other 50% (or 0,5)
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G = Only study guide for IOP2601 (2021-2023 version)
T
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To find the group simple go on unisa-groups
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za and search the IOP2601
module group and it will give you the link
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NB: Whilst going through this Memo, remember to go through each topic within the
IOP2601 Study Guide to ensure you understand how the answers are calculated and also
to understand further on how to correctly check the A1 A2 Tables in the textbook
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