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3. Assume that 20% of students at a university wear contact lenses. We randomly pick 200 students. Would it be unusual to obtain a sample
3. 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 the nearest hundredth when necessary. Select the most appropriate answer.
a. No, z = 0.580
b. No, z = 0.707
c. Yes, z = 0.707
d. No, z = 25
e. Yes, z = 25
f. all of the above answers are correct
Please provide workings, thanks.
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