8. Explain the difference between the two formulas binompdf (n, p, x) and binomedf (n, p,x);Use the appropriate formula above to solve problems (a! and {b}: The National Health Interview Survey reports that 30% of telephone users no longer use landlines, and have switched completely to cell phone use. Suppose we take a random sample of 12 telephone users. as Find the probability that the sample contains two users who have abandoned their landlines. [first, identify n, p, x, and use the correct function ] b. Find the probabilitvthat the sample contains at most two users who have abandoned their landlines [first identify n, p, x, and then use the correct function] c. Use the Binomial probabilityformula to answer question la} above . P[ x} - ('{n..\\-]p*q"'* - p'q\" Hint, identify n, p, q, and x]