31) A simple random sample of 400 individuals provides 100 Yes responses. a) What is the point estimate of the proportion of the population that would provide Yes responses? b) What is your estimate of the standard error of the proportion, σp̂? (The symbol is Sigma sub P bar) c) Compute the 95% confidence interval for the population proportion.
Added by Salvador D.
Step 1
In this case, we have 100 Yes responses out of 400 individuals, so the point estimate is: $$ \hat{p} = \frac{100}{400} = 0.25 $$ Show more…
Show all steps
Close
Your feedback will help us improve your experience
Kari Hasz and 77 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A simple random sample of 400 individuals provides 100 Yes responses. a. What is the point estimate of the proportion of the population that would provide Yes responses? What is your estimate of the standard error of the proportion, $\sigma_{p}^{-?}$ c. Compute the $95 \%$ confidence interval for the population proportion.
A simple random sample of 400 individuals provides 100 Yes responses. (a) What is the point estimate of the proportion of the population that would provide Yes responses? (b) What is your estimate of the standard error of the proportion, (Round your answer to four decimal places.) (c) Compute the 95% confidence interval for the population proportion. (Round your answers to four decimal places.)
James K.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD