Information about a random sample is given. Verify that the sample is large enough to use it to construct a confidence interval for the population proportion. Then construct a 98% confidence interval...

Information about a random sample is given. Verify that the sample
is large enough to use it to construct a confidence interval for the
population proportion. Then construct a 98% confidence interval for
the population proportion. (Round your answers to 4 d.p, and use the critical
value for t or the t-table)

a. n=80, p= 0.4

b. n=325, p= 0.4