Answer:
Concept & Calculation of Range .
Step-by-step explanation:
11 , 13 , 14 , 14 , 15, 17 , 19 , 20
Even numbers greater than 11 = 14 , 14 , 20
Range = Highest Value - Lowest Value = 20 - 14 = 6
Entire data range = 20 - 11 = 9
Range of all numbers greater than 11 (ie 13 , 14 , 14 , 15, 17 , 19 , 20) = 20 - 13 = 7
1/81
P(1st ticket is a winner) = 1/9
These are independent events
P(2nd ticket is a winner) = 1/9
P (winner, winner) = 1/9 * 1/9 = 1/81
68°
As BA⊥BD, so ∠ABD = 90°
also, ∠ABD = ∠CBD + ∠ABC
⇒ 90° = 4x + 52° + 8x - 10°
⇒ 12x = 48°
⇒ x = 4°
now,
∠CBD = 4x + 52°
= 4(4°) + 52°
= 68°
1. 12(1.17h) = 1.3104h Which is a 31.04% increase