Let N1=40, X1=30, N2=40 and X2=20 Calculate the test statistic ZSTAT based on the difference P1-P2...
Let N1=40, X1=30, N2=40 and X2=20
Calculate the test statistic ZSTAT based on the difference P1-P2
the test statistic, ZSTAT is what?
Homework Answers
Solution :
Given that,
1
= x1 / n1 = 30 / 40 = 0.75
2
= x2 / n2 = 20 / 40 = 0.5
= (x1 + x2) / (n1 + n2)
= (30 + 20) / (40 + 40) = 0.625
1 -
= 0.375
Z = (1
-
1) / 
* (1 -
) (1 / n1 + 1 / n2)
Z = (0.75 - 0.50) /
0.625 * 0.375 (1 / 40 + 1 / 40)
Z = 2.309
Test statistic = 2.309
Add Answer to:
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