## Answers

n=68, el=21, o=1.16 PLXL 21.2)=P(x-ll, 21.2-21) Torun 1.16/168 = P(Z < 1.2224) = 1- P(Z > 1.4224) - - 0.07780 PCX<21.2) l 0.9222 The sample mean can be considered as unerrol because it The sample mean could not be considered as unusual because it has a probability that is greater than 5%.

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