100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
STA1502 Exam pack 2024(Questions and answers) R45,02   Add to cart

Exam (elaborations)

STA1502 Exam pack 2024(Questions and answers)

 7 views  0 purchase

STA1502 Exam pack 2024(Questions and answers) With accurate answers and assurance that they are in the exam.

Preview 3 out of 22  pages

  • June 12, 2024
  • 22
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
All documents for this subject (6)
avatar-seller
gabrielmusyoka940
STA1502 EXAM
PACK 2024

QUESTIONS AND
ANSWERS
FOR ASSISTANCE CONTACT
EMAIL:gabrielmusyoka940@gmail.com

, STA1502/103/1/2024




Statistical Inference I
STA1502

Semester 1


Department of Statistics


TRIAL EXAMINATION PAPER
1. Trial Examination Papar
2. Trial Examination Paper Solutions




university
Define tomorrow. of south africa

, 1 TRIAL EXAMINATION PAPER
Question 1

For a sample of 10 observations with a sample mean of 39 and sample standard deviation of 4. Let
assume that a second sample of size 7 is independent and from other population with a sample
mean of 37 and sample standard deviation of 3. Test the hypothesis that the population mean for
group 1 is greater than the population mean from group 2, which one of the following statement is
correct?
1. The population variance are known.
2. The alternative hypothesis is H1 : u 1 < u 2 :
3. The critical value at 5% is 2:131.
4. H0 is not rejected at 5% level of significance.
5. The test statistics is 1:154:

Question 2

Using the information on question 1, the 95% confidence interval estimate for the difference be-
tween two population means is
1. 1:694I 5:694
2. 1:03269I 5:03269
3. 1:03269I 5:03269
4. 1:69I 5:694
5. 1:81I 5:81

Question 3

Given the given data:
Sample 1 Sample mean D 250 Sample standard deviation D 27 Sample size 9
Sample 2 Sample mean D 238 Sample standard deviation D 15 Sample size 9
Let assume that the population variance are unknown but equal, the standard error of the difference
between the two mean is :
1. 477
2. 106
3. 10:295
4. 13:242
5. 100


2

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller gabrielmusyoka940. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for R45,02. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

76710 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 14 years now

Start selling
R45,02
  • (0)
  Buy now