A poll is given, showing 75% are in favor of a new building project. If 10 people are chosen at random, what is the probability that exactly 7 of them favor the new building project?
Added by Tammy J.
Step 1
The problem involves a fixed number of trials (10 people), each trial has two possible outcomes (favor or not favor), the probability of success (favoring the project) is constant (75% or 0.75), and each trial is independent. This scenario fits a binomial Show more…
Show all steps
Close
Your feedback will help us improve your experience
Avi Zellman and 74 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 political candidate has asked you to conduct a poll to determine what percentage of people support her If the candidate only wants a 7X margin of error at a 90% confidence level, what size of sample is needed? Give your answer in whole people'
Joanna Q.
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 7% margin of error at a 95% confidence level, what size of sample is needed? Give your answer in whole people.
Bradley D.
A poll is given, showing that 75% are in favor of a new building project. If 10 people are chosen at random, what is the probability that exactly 2 of them favor the new building project? Show your work.
T. L.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD