Question

Suppose the true proportion of high school students who walk to school in New York City is 0.82. If many random samples of 400 high school students are taken, by how much would their sample proportions typically vary from the true proportion?

a. 0
b. 0.001
c. 0.019
d. 0.148
e. 7.684

Answer 1

i think it will be C

Explanation:

with the variability formula = squareroot p(1-p)/n which gives you 0.0192