# Section 7.2 - MATH 2311 Section 7.2 Confidence Interval...

• 11
• 100% (1) 1 out of 1 people found this document helpful

This preview shows page 1 - 11 out of 11 pages.

##### We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
The document you are viewing contains questions related to this textbook.
Chapter 3 / Exercise 2
Understanding Basic Statistics
Brase/Brase
Expert Verified
MATH 2311Section 7.2
##### We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
The document you are viewing contains questions related to this textbook.
Chapter 3 / Exercise 2
Understanding Basic Statistics
Brase/Brase
Expert Verified
Confidence Interval from a Proportion
Sample Statistics
The formula for confidence intervals of proportions:This is taken from the Formula Sheet for Test 3, already posted on my website!
R Studio / Calculator Assistance!
Example:
Popper 15…continued:For a certain population, it is known that 85% of people own their own vehicles. A simple random sample, of size 150, is selected from this population.4. Are the number of successes and failures appropriate for this method?
5. Determine the standard deviation or standard error for the sample selected.