Exam (elaborations)
STA1510 ASSESSMENT 4 SEM 2 OF 2024 EXPECTED QUESTIONS AND ANSWERS
- Course
- Institution
THIS DOCUMENT CONTAINS STA1510 ASSESSMENT 4 SEM 2 OF 2024 EXPECTED QUESTIONS AND ANSWERS. USE IT CORRECTLY TO OBTAIN ABOVE 75%
[Show more]
Seller
Follow
oscardiura
Reviews received
Content preview
ABC media company published 4 magazines for the teenage market. The executive editor of the company would like to know whether readership preference for the 4 magazines is independent ofgender. A survey among 190 teenagers was carried out. The following contingency table was obtained.
Which one of the following statements is incorrect?
Select one:
a. The alternative hypothesis, H₁ states that gender and magazine preference are dependent.
b. The degrees of freedom are 3.
c. The null hypothesis states that gender and magazine preference are independent.
d. The expected value for cell youth and girls is 13.60
e. The expected value for cell youth and boys is 13.40
Clear my choice
OSCAR THE TUTOR
oscardiura@gmail.com
+27737560989
for FAC MAC ECS DSC TAX QMI FIN INV BNU STA tutorials
, UNISA 2024 STA1510-24-Y Welcome Message Assessment 4
QUIZ
Question 2
Answer saved
Marked out of 1.00
A random sample of 8 applicants for a certain foreign job is selected. The number of years that these applicants have studied French in high school
or university, X, and the mark which they obtained in a proficiency test in French, Y, are recorded. The following information is given: ∑X =32, ∑Y =528,
∑XY=2136, ∑X2 =130 and ∑Y2 =34872 Fitting a regression line, which of the following statements is incorrect?
Select one:
a. b₁ = 12
b. Ŷ = 18+12Xi
c. The predicted mark obtained if an applicant studied French for three years is 42.
d. b₀ = 18
e. Mean of X values = 4 Mean of Y values = 66
Clear my choice
The benefits of buying summaries with Stuvia:
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
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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 these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller oscardiura. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.54. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now