9. Inference for Quantitative Data(COLON) Slopes
Justifying A Claim About The Slope Of A Regression Model Based On A Confidence Interval — Quiz
Test your understanding of justifying a claim about the slope of a regression model based on a confidence interval with 5 practice questions.
Practice Questions
Question 1
A 95% confidence interval for the slope of a regression line is $\left(0.8, 2.4\right)$. Which claim is best supported by this interval?
Question 2
A 90% confidence interval for the slope is $\left(-1.2, 0.5\right)$. What is the best conclusion about the slope?
Question 3
A student says, 'Because the 95% confidence interval for the slope is $\left(3.1, 5.6\right)$, the slope is $4.35$.' Why is this statement incorrect?
Question 4
Which confidence interval would provide the strongest evidence that the slope is not $0$?
Question 5
A 95% confidence interval for the slope is $\left(0.15, 0.60\right)$. Which statement is most accurate?