I need solve this questions of Statistics and probability

QUESTION 1 Following contingency table represents all engineering workers employed by a company. Mechanical Electrical Biomedical Male 21 Female 24 21 21 One engineer is randomly selected. What is the probability that this employee is a mechanical or he is a male. Round your answer to three decimal places. QUESTION 2 Determine which of the following is a valid discrete probability distribution 0 2 3 P(X=X) 0.2 0.75 0.05 0.02 -1 2 P(X=X) 0.2 0.55 02 0.0 3 P(X=X) 0.55 0.45 0.12 -0.12 2 8 P(X=x) 0.04 0.75 0.11 0.1 QUESTION 3 Statistics Canada reports that 25.06% of all deaths are attributable to heart disease. Find the mean for the number of such deaths that will occur in a typical region with 3,442 deaths. Round your answer to two decimal places. QUESTION 4 Suppose that A and B are two events such that P(A)=0.35, P(B)=0.47 and P(A or B)=0.68. Find P(A and B) 0.25 0 0.14 0.15 0.12 QUESTION 5 The probability that an automobile needs an oil change is 28.76% and the probability that it needs a new oil filter is 39.28%. Find the probability that an automobile does not need an oil change. Round your answer to four decimal places. QUESTION 6 In Abu Dhabi 89% of the people have internet access from their homes. A random sample of 30 people is selected. What is the probobality that more than 21 people have Internet access? Round your answer to four decimal places. What is the probobality that exactly 7 people do not have Internet access? Round your answer to four decimal places. Find the expected number of people who do not have Internet access. Round your answer to one decimal places