6. Inference for Categorical Data(COLON) Proportions
Justifying A Claim About A Population Proportion Based On A Confidence Interval — Quiz
Test your understanding of justifying a claim about a population proportion based on a confidence interval with 5 practice questions.
Practice Questions
Question 1
A 95% confidence interval for a population proportion is $\left(0.42, 0.58\right)$. Which claim is supported by this interval?
Question 2
A claim says that the population proportion is $0.60$. A $90\%$ confidence interval for the proportion is $\left(0.55, 0.68\right)$. What is the best conclusion?
Question 3
A $95\%$ confidence interval for a population proportion is $\left(0.18, 0.26\right)$. Which proposed value is most clearly not supported by the interval?
Question 4
What does it mean if a claimed population proportion is not in a confidence interval?
Question 5
A student says, '$0.40$ is in the $95\%$ confidence interval, so there is a $95\%$ chance the population proportion equals $0.40$.' What is the best correction?