please need help solving I was absent and don\'t know how to solve this Question

Question

please need help solving I was absent and don't know how to solve this

Question 1: From February 18 to 21, 2016, CNN poled 1000 Democrats, Republicans, and Independents on whether the U.S. Senate should hold confrmation hearings for a U.S. Supreme Court nominee before the next President takes office in January 2017. The question and results of this survey are below. Political Affilation Democrat Independent Republican 246 Total 593 407 that Yes President Obama has said that he ww nominate someone to fw Yes the currend U.S. Supreme Court vacancy. Should the Senate hold hearings on the nominee before the next President takes Totl 340 office ?" 75 272 No 68 164 175 3 takes | Total| 340 | 410 | 250 | 1000 e court. se the tahle information to fill the vacancy on On March 16

Explanation / Answer

(a)The probability that Jack will support Senate hearings on the nominations is:

P(say yes to the hearings)

=593/1000

=0.593

(b)If the data of support senate hearings on the nominations are mutually exclusive then the two events yes and no can not occur simultaneously.

That is P(yes and no)=0

That is P(Yes or No)=P(Yes)+P(No)

(c)P(Mary will be a democrat or will support Senate hearings on the nomination)

=P(Mary will be a democrat)+P (will support Senate hearings on the nomination)-P(Mary will be a democrat and Mary will support Senate hearings on the nomination)

=(340/1000)+(593/1000)-(272/1000)

=0.340+0.593-0.272

=0.661

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