I still need help with these statistic problems. I am just practicing to prepare for exam. Also, explain for me so I can have deep understanding to solve myself later.I really appreciate your help which will led me to have solid understanding and prepare for exam tomorrow.

7) Two movies (in different theaters) start at 6:50pm. The probability Sue goes to the first movie is 40%, while the probability that she goes to the second is 30%. What is the probability that she will go to one movie or the other (rather than, for example, stay home)? .4*.3= 0.12 or 12% 8) At HVCC, 18% of the students take Statistics, 53% take Sociology, and 7% take both classes (this 7% is made up of students who ARE part of the 18% and 53% figures). If a student is randomly selected: a) Find the probability that the student is taking Statistics or Sociology. . 18+.53+0.71 or 71% b) Find the probability that the student is not taking Statistics. 53+.07=0.6 or 60% 9) A bin consists of 5 red, 3 green, and 7 blue cubes. A cube is chosen, replaced, then another is chosen. Find the probability that the first cube is green and the second blue. 3+7/15=0.67 10) A bin consists of 5 red, 3 green, and 7 blue cubes. A cube is chosen, not replaced, then another is chosen. Find the probability that the first cube is green and the second blue. 3/15*7/15=0.093333333 11) Assume the probability that a student will pass an exam is 95%. What is the probability that three randomly selected students will all pass this exam? What assumption is being made? 1-0.95=0.05 or 5% so only 5% will not pass the exam