Suppose that we have a population proportion $P=0\mathrm{.}25$ and a random sample of size $n=100$ drawn from the population. Cornplete $($a$)$ through $($c$)$ below. Click the icon to view the standard normal table of the cumulative distribution function.

a$.$ What is the probability that the sample proportion is greater than $0\mathrm{.}28?$ P $($Round to four decimal places as needed $)$