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March 5, 2010

Unit 7 Multiple Choice Practice Quiz
Quiz 3 was the hardest one for me. I'm not sure how to work this problem and I want to try to figure out before I take the Final Exam today. Thanks!

7. For a population with mean equal to 100 and standard deviation equal to 20, the sampling distribution of sample means based on N = 4 will have an expected standard deviation of:
Posted by Laura B. at 9:37 AM CST

Comments:

  Rebecca G.  says:
You do realize that anyone who has not taken Quiz 3 will now have an advantage of getting this question correct.

Standard deviation of the sampling distribution = σ/√N or 20/√4 = 20/2 = 10
Posted on Fri, 5 Mar 2010 9:43 AM CST by Rebecca G.
  Laura B.  says:
Oh sorry, I din't think of that, but the question I listed above is from the Practice Quiz, not the actual 3rd quiz. When I said that Quiz 3 was the hardest for me, I meant that I do not understand how to work some of the problems from Unit 7 and 8. I don't even remember if this particular question is on the actual quiz or not, but it's on the practice quiz so I won't to make sure I know how to work it for the final (just in case it's on there).
Posted on Fri, 5 Mar 2010 10:32 AM CST by Laura B.