Exam (elaborations)
STA 2023 Elementary Statistics STA 2023 final exam review with Varified Solutions
- Institution
- Saint Petersburg College
STA 2023 Elementary Statistics
[Show more]
Content preview
Quiz Submissions - Final Reviewpoint
Determine type and strength of the association.
Data shown on the following scatter-plot indicate a correlation
of 0.96 between the average flow rate and pressure.
Describe the association.
Question options:
ve correlation
of a correlation
ive correlation
ive correlation
ve correlation
Find the correlation coefficient.
A group of persons filled in a questionnaire their age and the
number of states they visited. The results are recorded in the
table below.
Question options:
, Interpret the correlation coefficient.
The correlation between a person’s annual income and debt level is high and positive.
Therefore, it can be concluded that:
Question options:
igher annual incomes tend to have more debt.
ge enough incomes do not have any debt.
me will cause a person to go into debt.
her annual incomes tend to have less debt.
Determine the point estimate.
It has been determined with 95% confidence that the
proportion of Americans who eat turkey on Thanksgiving is
between 0.78 and 0.82.
Determine the sample proportion that was used to build this
confidence interval.
Question options:
, Determine the specified confidence interval.
It has been estimated, with 90% confidence, the proportion of Americans
who go out shopping on Black Friday is 0.40 with a margin of error equal
to 0.04.
Determine the resulting 90% confidence interval for the proportion of
Americans who go out shopping on Black Friday.
Question options:
Construct the equation of the regression line.
An editing firm compiled the following table which lists the
number of pages contained in a piece of technical writing and
the cost of proofreading and correcting them (in dollars).
Assume there is a significant linear relationship between X and
Y and construct the equation of the linear regression line.
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 YourAssignmentHandlers. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62555 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now