Exam (elaborations)
STA1502 ASSIGNMENT 2 EXPECTED QUESTIONS 2023
- Institution
- University Of South Africa (Unisa)
STA1502 ASSIGNMENT 2 EXPECTED QUESTIONS 2023; Contact us on
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1.Select one:
1.
2.096
2.
1.978
3.
4.986
4.
2.964
5.
14.777
, 2.
According to the CSIR research group, 63% of South Africans in the 18-35 age group
said that they were comfortable by filing the income tax returns electronically, compared
to just 49% of those who were in 55-65 age group. Assume that 200 persons were
surveyed from each age group.
The SARS manager wants to examine whether South Africans in the 18-35 age group
might be more comfortable with electronic filing than their counterparts in 55-65 group
at the 5% level of significance.
Which one of the following statements is incorrect?
Select one:
1.
The null hypothesis is H0: p1 - p2 = 0 and the alternative hypothesis is H1: p1 - p2 > 0.
2.
The sample proportions are 0.63 and 0.49, respectively.
3.
The pooled proportion is 0.56.
4.
This is a comparison of sample proportions from two independent samples where both
sample sizes are large.
5.
The standard error is 0.065.
Clear my choice
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