Suppose that you have four 10 km segments to your automobile trip. You drive your car: (1) 100 km/hr for the first 10 km (2) 110 km/hr for the second 10 km (3) 90 km/hr for the third 10 km (4) 120 km/hr for the fourth 10 km - Then the appropriate mean to calculate average speed (velocity) for your tripe is A Arithmetic mean B Harmonic mean C Geometric mean D Median - The value of average speed (velocity) for your tripe (km/h) is A 105 B 103.8 C 30 D 100 -The probability that any one of two engines on an aircraft will not fail is 0.95. Assuming that both engines operate independently of each other, the probability that both engines will not fail is: (A) 0.95 0.95 (B) 0.050.05 (C) 0.95+0.95 (D) 0.05+0.05 - If P(A) = 0.5 , P(B) = 0.3 and P(AB) = 0.5, then P(A B) is equal to: (A) 0.30 (B) 0.65 (C) 0.50 (D) 0.40 - if A and B are two mutually exclusive events with P(A) = 0.15 and P(B) = 0.4, then P(A and not B) is: (A) 0.85 (B) 0.60 (C) 0.15 (D) 0.40