Question A.

How many ways can one choose a combination of three items out of eight distinct items? 112 O 224 O 28 O 56 DETAILS MENDSTATC3 4.TB.016. If P(A) = 0.80, P(B) = 0.70, and P(A U B) = 0.90, then what is the value of P(A n B)? O 0.63 O 0.72 O 0.60 O 0.56 DETAILS MENDSTATC3 4. TB.017. If P(A) = 0.30, P(B) = 0.40, and P(A n B) = 0.20, what is the value of P(A/B)? O 0.12 O 0.08 O 0.67 O 0.50The probability distribution of the number of accidents 'n North York, Ontarior each day is given by X 0 1 2 3 4 5 P{X} 0.20 0.15 0.25 0.15 0.20 0.05 Based on this distribution, what would be the expected number of accidents on a given day? 0 2.15 O 4.62 O 1.47 O 1.81 DETAILS MENDSTATCB 413.036. The probability distribution of the number of accidents 'n North York, Ontario, each day is given in the table below: X 0 1 P{x} 0.20 0.15 2 3 4 5 0.25 0.15 0.20 0.05 Based on this distribution, w1at is the approximate value of the standard deviation of the number of accidents per day? ('5 u 6.95 What is the standard deviation of a binomial distribution for which n = 50 and p = 0.15? O 2.525 O 7.082 O 50.15 O 6.375 DETAILS MENDSTATC3 5.TB.014. MY NOTES ASK YOUR TEACHER It has been alleged that 40% of all community college students favour Dell computers. If this were true, and we took a random sample of 25 students, the binomial probability table for cumulative values of x available in your text would reveal which of the following probabilities? (Select all that apply.) O The probability of 10 or fewer students in favour is 0.586. O The probability of fewer than 19 students in favour is 1.000. DETAILS MENDSTATC3 5.TB.016. MY NOTES ASK YOUR TEACHER If the random variable x is binomially distributed with n = 10 and p = 0.05, what is P(x = 2)? O 0.914 O 0.075 O 0.599 O 0.55