(b) A survey of flight based on airline and arrival time was conducted. A random sample of 1700 flights of two major airlines was selected and the results is shown below. Suppose one flight is selected at random from these 1700 flights. < 30 min late 30 - 60 min late > 60 min late Airline A 429 390 92 Airline B 393 316 80 (i) What is the probability that the flight is between 30 to 60 minutes late or from airline B? (ii) What is the probability that the flight is more than 1 hour late given that it is Airline A?
Angles in Circles
Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.
Arcs in Circles
A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.
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