Given a sample with r = 0.456, n = 25, and α= 0.01, determine the critical r-value to test the null hypothesis that rho = 0.
Added by Javier O.
Step 1
First, we need to find the degrees of freedom (df). The formula for degrees of freedom in a correlation test is df = n - 2, where n is the sample size. In this case, n = 25, so df = 25 - 2 = 23. Show more…
Show all steps
Close
Your feedback will help us improve your experience
T. L. and 86 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
Find the critical value(s), t0, to test the claim that µd > 0. Assume the samples are random and dependent, and the populations are normally distributed. Use α = 0.10 and n = 15.
T. L.
Find the critical value for a right-tailed hypothesis test for mean with Ě‘Ě‘ = 0.05, n = 15, and Ě‘Ě‘ = 5. 2.576 1.96 1.645 2.33 2.624
Christopher D.
Determine the critical values that would be used in testing each of the following null hypotheses using the classical approach. a. $\quad H_{o}: \rho=0$ vs. $H_{a}: \rho \neq 0,$ with $n=18$ and $\alpha=0.05$ b. $\quad H_{o}: \rho=0$ vs. $H_{a}: \rho>0,$ with $n=32$ and $\alpha=0.01$ c. $\quad H_{o}: \rho=0$ vs. $H_{a}: \rho<0,$ with $n=16$ and $\alpha=0.05$
Linear Correlation and Regression Analysis
Inferences about the Linear Correlation Coefficient
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