Suppose a random sample of 9 measurements is selected from a population with a mean µ = 36 and a variance ?2 = 45. What are the values of E[X-bar] and Variance of X-bar computed from this sample? 36 and 15 4 and 15 36 and 5 4 and 5
Added by Patrick B.
Step 1
This means that the expected value of the sample mean (X-bar) is also 36. Show more…
Show all steps
Close
Your feedback will help us improve your experience
Pritesh Ranjan and 92 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
Use this small data set to find: 1 4 -5, 6, 9 a) the value for n b) the value for the sample mean (X-bar) c) the value of the Sample Variance d) the value for the sample Standard Deviation
Adi S.
Suppose a population variance for a given population is 36. If we select all possible samples of a certain size from this population, then, on average, what will be the value of the sample variance?
T. L.
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