I need help to find the Excel formulas to calculate these questions. I used my calculator, but was instructed to use Excel only. Thanks!

What advertising medium gives a brand the most credibility in influencing branddecisions? According to asurvey, 44% of Millennials point to TV.

a.

To conduct afollow-up study that would provide 95% confidence that the point estimate is correct to within 0.04 of the populationproportion, how large a sample size isrequired?

Error margin or e=

nothing

(Enter a number with two decimalplaces)

Z=

nothing

(Round to five decimalplaces)

A sample size of

nothing

people is required. (Round up to the nearestinteger.)