Summary
Summary Stats 188 chapter 9 notes
- Course
- Institution
Summary of chapter 9, covered in the second semester
[Show more]
1 review
By: eckojvr • 1 year ago
Seller
Follow
juliayates19
Reviews received
Content preview
CHAPTER 9: FUNDAMENTALS OF HYPOTHESIS TESTING -> ONE-SAMPLE TESTS
A hypothesis = a claim ( assertion ) about a population parameter
population mean lust
Example : The
average monthly allowance of tertiary students in the Western Cape is R 4500
in =
4500
Population Proportion ( Ti )
Example : The proportion of tertiary students in the Western Cape that own a car is 251 .
Ti -
_
0.25
FUNDAMENTALS OF HYPOTHESIS TESTING
Hypothesis testing analyses differences between a sample statistic and the results one would expect if a null
hypothesis was true .
STEPS FOR HYPOTHESIS TESTING :
'
State a straightforward claim about the population mean (M ) .
1 This claim referred to as the Null
hypothesis (1-10)
=
2- State exclusive claim to the
a
mutually null hypothesis .
hypothesis ( th )
>
This claim = referred to as the alternative
3.
Begin with the assumption that Ho is true .
4. to see if it
Examine the sample statistics better supports Ho or Hi .
, °
THE NULL HYPOTHESIS 1-10 : Assumes the status -940 Case .
I States the claim or assertion to be validated
1 the belief
Represents current in a situation
Example : An airline advertised that its trip from Cape Town to
Johannesburg is 110 mins on
average
Ho : it = 110
THE :
ALTERNATIVE Challenges
•
HYPOTHESIS Hi the status quo Serrano .
'
The of null
opposite the hypothesis
1
May or
may not be proven
1
generally the hypothesis that the researcher intends to improve .
Examples : The average travel time of an airline from Cape Town to Johannesburg is
longer than 110 mins
Hi : it 110
A pair of null & alternative hypotheses are
always mutually exclusive only one of them can be true .
'
they are also
collectively exhaustive
The null hypothesis always refers to a population parameter such as in and not a sample statistic
such as .
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 juliayates19. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.56. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now