1 points Save Answer QUESTION 4 The number of customers paying with Apple Pay is Poisson distributed. The mean number of such users per 5-minute interval is 1.5. The probability that no such users in the next 10 minutes is: O a. 0.05 O b.0.22 O c. 0.34 O d. 0.45 O e. None of the above 1 points Save Answer QUESTION 5 The result of the math quiz in Jerry's class follows a normal distribution with a mean of 75 marks and a standard deviation of 2.5 marks. The probability of randomly selecting a student whose mark is lower than 80 is: O a. 0.14 O b.0.78 O c. 0.82 O d. 0.98 O e. None of the above 1 points Save Answer QUESTION 6 If X and V are random variables with E(X) =5 and E(Y) = 3, then E(2X - 3)) is: O a. 1 O b. 15 O c. 21 O d.42 O e. None of the above 1 points Save Answer QUESTION 7 Consider two independent events A and 8. The probability that event A occurs is 0.40 and the probability that event A occurs when event S occurs is 0.40, then P(B) is: O a. 1.0 O b. 0.6 O c. 0.4 O d.0.2 O e. P(B) cannot be determined with the information given