Marketing analysts hav

e determined that a particular advertising campaign should

make at least 20% of the adult population aware of the advertised project. Assume that 20% of the

population is aware of the new product

through the campaign, f

ind

an

approximate probability

that

at least 6

5 of 400 adults sampled will indicate that they have seen the ad and are aware of the

new product

.

Use an appropriate approximation method.