Question 890184: Two researchers conduct separate studies to test H0: p = 0.50 against Ha p not equal 0.50, each with n= 400.
a. Researcher A gets 200 observations in the category of interest, p =220/400= 0.550 and test statistic z = 2.00. Show that the P-value = 0.046 for Research A’s analysis.
b. Researcher B gets 219 in the category of interest, and p = 219/400 = 0.5475 and test statistic z = 1.90. Show the P-value = 0.057 for Research B’s analysis.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Two researchers conduct separate studies to test H0: p = 0.50 against Ha p not equal 0.50, each with n= 400.
a. Researcher A gets 200 observations in the category of interest, p =220/400= 0.550 and test statistic z = 2.00. Show that the P-value = 0.046 for Research A’s analysis.
Ans: p-value = 2*normalcdf(2,100) = 0.046
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b. Researcher B gets 219 in the category of interest, and p = 219/400 = 0.5475 and test statistic z = 1.90. Show the P-value = 0.057 for Research B’s analysis.
Ans: p-value = 2*normalcdf(1.9,100) = 0.057
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Cheers,
Stan H.
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