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Homework Help: Another stats q

  1. May 13, 2008 #1
    1. The problem statement, all variables and given/known data
    For a quantitative variable, you want to test H0; [tex]\mu[/tex]=0, against Ha, mu not equal 0. The 10 observations are 3,7,3,3,0,8,1,12,5,8

    a. I get this part
    b. The P-value is 0.002. Interpret, and make a decision using a significance level of 0.05. Interpret.
    c. If you had used Ha: mu>0, what would the P-value be? Intrepret.
    d. If you had instead used Ha: mu<0, what wold the P-value be? Intrepret it.


    2. Relevant equations
    b.
    Does intrepret mean draw it, or say it? I have the table, but the value don't go as low as 0.002. What do I do?

    c&d. I'll probably understand this if I can understant part b.
    Help me please. xoxoxoxox


    3. The attempt at a solution
     
  2. jcsd
  3. May 14, 2008 #2
    You can draw a normal curve, and indicate what p = 0.002 for a two-sided test means on there, but you should also explain it in words. What does a probability of 0.002 mean; in other words, what has a 0.002 chance of occurring? When you perform your test, what are you assuming is true?
     
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