# statistics

An investigator wants to estimate caffeine consumption in high school students. How many students would be required to estimate the proportion of students who consume coffee? Suppose we want the estimate to be within 5% of the true proportion with 95% confidence.

Alpha = ________
Z= ________
p= ________
Effect Size = ________
n= ________

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1. alpha = a= 0.05
Z0.025 = 1.96
p = 0.5
q = 1-p = 0.5
E = 0.05
Effect size
= 384.16
n = 385

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posted by Kuai

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