If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Course: Statistics and probability > Unit 10

Lesson 2: Sampling distribution of a sample proportion
Math
Statistics and probability
Sampling distributions
Sampling distribution of a sample proportion
© 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Finding probabilities with sample proportions

Google Classroom
You might need: Calculator,Z table

Problem

A local agricultural cooperative claims that 55% of about 60,000 adults in a county believe that gardening should be part of the school curriculum. However, when you take a simple random sample of 300 of the adults in the county, only 50% say that they believe that gardening should be part of the school curriculum.
Assuming that the agricultural cooperative's claim is accurate, what is the approximate probability that less than 50% of the sample would say that they believe that gardening should be part of the school curriculum?
Choose 1 answer: