PYC3714
2025
ASSESMENT
1&2
,Assessment 1
Started on Monday, 22 September 2025, 1:01 PM
State Finished
Completed on Monday, 22 September 2025, 1:16 PM
Time taken 15 mins 1 sec
Marks 21.00/30.00
Grade 70.00 out of 100.00
Question 1
Correct
Mark 1.00 out of 1.00
Flag question
Question text
A teacher is teaching a class about probabilities. She shows the learners a bowl which
contains 3 Red marbles, 5 Blue marbles and 7 Yellow marbles. One of the learners, Vusi,
is asked by the teacher to select one marble out of the bowl at random and to hand it to
her. She shows the class that Vusi chose a Blue marble and she demonstrates to the
class how to calculate the probability of this outcome. While holding on to the first
marble, she asks Vusi to select another marble in the same way. She now asks the class
to calculate the probability that both the first and the second marble chosen by Vusi
would happen to be Blue.
Select the best estimate out of the options given below.
a.
0.0952
b.
0.1333
c.
0.1111
d.
0.6190
Feedback
Your answer is correct.
Question 2
Correct
Mark 1.00 out of 1.00
Flag question
, Question text
It is hypothesised that higher levels of depression are related to higher levels of anxiety.
Considering this research hypothesis, what would the null hypothesis be?
a.
There is no relationship between depression and anxiety and any observed relationship
is the result of chance.
b.
Individuals with lower levels of depression will have higher levels of anxiety while any
result otherwise observed is the product of chance.
c.
Individuals with higher levels of depression will have lower levels of anxiety while any
relationships otherwise observed are the result of chance or measurement error.
d.
There will not be a significant difference between those individuals who score high on
depression in comparison to those individuals who score high on anxiety. Any observed
difference is the result of chance alone.
Feedback
Your answer is correct.
Question 3
Incorrect
Mark 0.00 out of 1.00
Flag question
Question text
In response to a questionnaire, 57 people answered “yes” to a particular question. Of
these, 8 persons were male. There were 61 people that answered "no" to the question,
and 5 of these were male. If one person is selected randomly from the group, what is the
probability that the person answered “yes” or was male?
a.
0.593
b.
0.14
c.
0.525
, d.
0.11
Feedback
Your answer is incorrect.
Question 4
Correct
Mark 1.00 out of 1.00
Flag question
Question text
Lebo claims that workers in large companies are less work motivated than workers in
small companies. In a previous study involving all large companies in South Africa, it
was found that the average workers’ motivation score on a work motivation
questionnaire (where a higher score indicates a higher level of work motivation) was 50
with a standard deviation of 15. Lebo plans to present the same questionnaire to a
sample of workers from small companies to determine whether her suspicion is true.
Which of the sets of statistical hypotheses below reflect the research hypothesis to be
tested?
a.
H0 : μ = 50 H1 : μ > 50
b.
H0 : μ = 50 H1 : μ >
c.
H0 : μ = 50 H1 : μ ≠ 50
d.
H0 : μ = 50 H1 : μ < 50
Feedback
Your answer is correct.
Question 5
Correct
Mark 1.00 out of 1.00
Flag question
Question text
In the process of psychological research, researchers try to - - - - -.
2025
ASSESMENT
1&2
,Assessment 1
Started on Monday, 22 September 2025, 1:01 PM
State Finished
Completed on Monday, 22 September 2025, 1:16 PM
Time taken 15 mins 1 sec
Marks 21.00/30.00
Grade 70.00 out of 100.00
Question 1
Correct
Mark 1.00 out of 1.00
Flag question
Question text
A teacher is teaching a class about probabilities. She shows the learners a bowl which
contains 3 Red marbles, 5 Blue marbles and 7 Yellow marbles. One of the learners, Vusi,
is asked by the teacher to select one marble out of the bowl at random and to hand it to
her. She shows the class that Vusi chose a Blue marble and she demonstrates to the
class how to calculate the probability of this outcome. While holding on to the first
marble, she asks Vusi to select another marble in the same way. She now asks the class
to calculate the probability that both the first and the second marble chosen by Vusi
would happen to be Blue.
Select the best estimate out of the options given below.
a.
0.0952
b.
0.1333
c.
0.1111
d.
0.6190
Feedback
Your answer is correct.
Question 2
Correct
Mark 1.00 out of 1.00
Flag question
, Question text
It is hypothesised that higher levels of depression are related to higher levels of anxiety.
Considering this research hypothesis, what would the null hypothesis be?
a.
There is no relationship between depression and anxiety and any observed relationship
is the result of chance.
b.
Individuals with lower levels of depression will have higher levels of anxiety while any
result otherwise observed is the product of chance.
c.
Individuals with higher levels of depression will have lower levels of anxiety while any
relationships otherwise observed are the result of chance or measurement error.
d.
There will not be a significant difference between those individuals who score high on
depression in comparison to those individuals who score high on anxiety. Any observed
difference is the result of chance alone.
Feedback
Your answer is correct.
Question 3
Incorrect
Mark 0.00 out of 1.00
Flag question
Question text
In response to a questionnaire, 57 people answered “yes” to a particular question. Of
these, 8 persons were male. There were 61 people that answered "no" to the question,
and 5 of these were male. If one person is selected randomly from the group, what is the
probability that the person answered “yes” or was male?
a.
0.593
b.
0.14
c.
0.525
, d.
0.11
Feedback
Your answer is incorrect.
Question 4
Correct
Mark 1.00 out of 1.00
Flag question
Question text
Lebo claims that workers in large companies are less work motivated than workers in
small companies. In a previous study involving all large companies in South Africa, it
was found that the average workers’ motivation score on a work motivation
questionnaire (where a higher score indicates a higher level of work motivation) was 50
with a standard deviation of 15. Lebo plans to present the same questionnaire to a
sample of workers from small companies to determine whether her suspicion is true.
Which of the sets of statistical hypotheses below reflect the research hypothesis to be
tested?
a.
H0 : μ = 50 H1 : μ > 50
b.
H0 : μ = 50 H1 : μ >
c.
H0 : μ = 50 H1 : μ ≠ 50
d.
H0 : μ = 50 H1 : μ < 50
Feedback
Your answer is correct.
Question 5
Correct
Mark 1.00 out of 1.00
Flag question
Question text
In the process of psychological research, researchers try to - - - - -.
