Round to two decimal places when necessary

Reference no: EM131087047

Assume that 20% of students at a university wear contact lenses. We randomly pick 200 students. Would it be unusual to obtain a sample proportion of 22%? Answer by calculating the appropriate z-score. Round to two decimal places when necessary.

A. Yes, z =25

B. Yes, z =0.71C. No, z =0.71D. No, z =25E. No, z =0.68

Reference no: EM131087047

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