A prison official wants to estimate the proportion of cases of recidivism. Examining the records of 250 convicts, the official determines that there are 65 cases of recidivism.

1. For this sample, the estimated standard error is:

a. .020

b. .028

c. .040

d. .018

2. For this sample, a 99% confidence interval for the proportion of recidivism cases would be:

a. .178 to .342

b. .188 to .342

c. .188to.332

d. .178 to .332

3.. Assume the prison population is 1255 convicts. If so, then a 99% confidence interval for the proportion of recidivism cases would be:

a. .188 to .342

b. .196 to .342

c. .196 to .324

d. .188 to .324