Consider taking a random sample from a population with p = 0.70.
a. What is the standard error of ˆ p for random samples of size 100?
b. Would the standard error of ˆ p be smaller for samples of size 100 or samples of size 400?
c. Does decreasing the sample size by a factor of 4, from 400 to 100, result in a standard error of ˆ p that is four times as large? |

New search. (Also 1294 free access solutions) |