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vious 1 Results Problem lem this List Next for submission At least one or the an

ID: 3224460 • Letter: V

Question

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Explanation / Answer

Sample proportion phat=165/1970 = 0.0838

Sample size n=1970

Test statistic Z=(0.0838-0.09)/sqrt(0.09*(1-0.09)/1970)

=-0.9616

At 0.05 level, left tailed critical Z=-1.645