Please answer using excel

A CBS News poll conducted June 10 and 11,2006, among a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below. Express each of your answers as a percent rounded to the nearest tenth (for example, 12.3\%). a. What percent of survey respondents identified themselves as affiliated with neither party (marginal probability)? % b. What percent of survey respondents thought the economy was getting better and were affiliated with neither party (joint probability)? % c. What percent of those affiliated with neither party thought the economy was getting better (conditional probability)? %