We test for a hypothesized difference between two independent population means: H0: μ1 = μ2. The population standard deviations are unknown but assumed equal. There are 16 observations in the first sample and 13 in the second sample. How many degrees of freedom are associated with the critical value? 26 27 28 29
Added by Hugo V.
Step 1
The degrees of freedom for a sample is equal to the sample size minus 1. For the first sample, there are 16 observations, so the degrees of freedom for the first sample is 16 - 1 = 15. For the second sample, there are 13 observations, so the degrees of freedom Show more…
Show all steps
Close
Your feedback will help us improve your experience
Hoan Nguyen and 89 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
We test for a hypothesized difference between two independent population means: H0: μ1 = μ2. The population standard deviations are unknown but assumed equal. The number of observations in the first sample is 30 and 27 in the second sample. How many degrees of freedom are associated with the critical value?
Qudsiya A.
Two independent samples are drawn from two populations, and the following information is provided. Sample 1 Sample 2 n 54 62 35 85 s 24 38 We want to test the following hypotheses. H0: μ1 - μ2 ≥ 0 Ha: μ1 - μ2 < 0 Determine the degrees of freedom. Compute the test statistic. At the 95% confidence, test the hypotheses. Assume the two populations are normally distributed and have equal variances
Frank D.
For a small sample difference of means test where n1 = 12 and n2 = 16, and we can assume the population variances are equal, the degrees of freedom for the test statistic is: Group of answer choices 27 28 26 25
Manisha S.
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