Write 9 pages thesis on the topic final stat. Work: Since the Q3 for Quiz 1 is 95 and Q3 for Quiz 2 is 90. Quiz 2 has 25% of students 90 and above whereas the Quiz 1 has Q3 as 95 which means 90 starts even before Q3. So Quiz 1 has more students whose score is 90 and above.Work: Since the Q2 for Quiz 1 is 60 and Q2 for Quiz 2 is 50. Quiz 1 has 50% of students below 60 whereas the Quiz 2 has Q2 as 50 which means some students above this range has below score 60. So it is more than 50%Here n(A)=200 and n(B)=100 and n(A??B)=80. P(A)=n(A)/N=200/1000=0.2, P(B)=n(B)/N=100/1000=0.1 and P(A??B)=n(A??B)/N=80/1000=0.08. The probability that a randomly selected junior is taking at least one of these two courses is given by(a) Since the opponent’s serves which she is able to return is the no. of trials , it is 10 and she is able to return is treated as success it is 30% and p=0.3, the probability of success and q=1- probability of failure=1-p=0.7Given that x?N(10,2) and define a standard normal variable z=(x- ?)/?=(x-10)/2 which follows N(0,1) so that the probabilities can be obtained form a standard normal table.