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Mathematics, 18.01.2021 14:00 owlsandR5

Ming works as a quality assurance analyst at a bottling factory. She wants to use a one-sample z interval to estimate what proportion of 500 ml bottles are underfilled. She wants the margin of error to be no more than 4% at 90% confidence. What is the smallest sample size required to obtain the desired margin of error? a) 271
b) 423
c) 651
d) 888

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