GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY.

Hi,kindly reply with whole answers correct,accurate answers and step by step working.Do not skip step.Be very clear and mention about the formula for each step.Make sure the answers are correct and accurate. Be very organised with the working and systematic.Please explain to support and make it clear.

STA108

DECEMBER 2018

QUESTION 5 Given that P( X) = 9 P(Y ) = - and P(XUY)=-, find 20 20 10 a) P(XnY) (2 marks) b) P(X|Y) (2 marks) QUESTION 6 The completion of a construction job at Town Z may be delayed because of a strike. The probability that there will be a strike in that construction area is 0.25. The probability that the construction job will not be completed on time if there is a strike is 0.6 and the probability that the construction job will be completed on time if there is no strike is 0.82. a) Draw a tree diagram to describe for the above situation. (3 marks) b) Find the probability that the construction job will not be completed on time. (2 marks) c) If the construction job can be completed on time, find the probability that there will be no strike. (3 marks)QUESTION 7 a) Nine male students and five female students have been short listed by a club advisor to be nominated as a new president, vice president, secretary and treasurer during the annual grand meeting. Find the probability that at least 3 female students are selected in this committee. (3 marks) b) The letters of the word EXCELLENT are each written on a card and the cards are then shuffled and placed in a row. Find the number of ways that the cards can be arranged if the arrangement starts with the letter 'C'. (2 marks)