Please explain briefly through showing equation steps DO NOT Except explains in words like a paragraph or need three sentences and above to explain!!

And remember to choose an answer!

cee wel 19. In a statistics class, 30% of students have taken Lincar Algebra, 45% of the students ( nip- have taken Calculus, and 15% have taken both Lincar Algebra and Calculus. If a student is randomly selected from this class, what is the probability that he/she has ails taken either Linear Algebra or Calculus but not both? 0.45 PIAUB) = PCA)+ P(B) PCAnB ) px 0.6 M 0.75 30+ 45+ 15 - 910 0.9 too 90= (10) . 15% m (PUB)Z) None of the orther choices gives the correct answer ( 30 195 7 ) 721. The grades in a large statistics class have a Normal distribution with mcan 69. If 10% of the students in the class had grades below 64, what percent of students in this class have grades between 64 and 74? Note: In order to avoid complications, you may assume that no student in this class had a grade exactly cqual to 64 or 74. 90 percent 20 percent 64 74 10 percent 80 percent None of the orther-choices gives the correct