Assume you have a hypothesis test as follows. Ho : P1 – P2 = 0 (HA:...

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Answer 1

Answer #1

We have,

2. (pa-po)—0 | Spa -> (+)

$\hat{p1}$ = 0.40 of 81 = 32.4/81

$\hat{p2}$ = 0.22 of 84 = 18.48/84

$\hat{p}$ = (32.4+18.48)/(81+84) = 0.308

Thus,

z = (0.40-0.22)/sqrt(0.308*(1-0.308)*(1/81+1/84))

z = 2.50

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Answer 2

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