Question 4 1 Point In professional cricket one of the generally accepted requirements for a bowler to be considered express is that they have to be able to bowl above 145 km/hr. With this in mind, a contingent of pace bowlers had a bowling competition and measured the speed of their quickest ball. They found that the overall mean was 138.9km/hr with a standard deviation of 8.6 km/hr. What is the probability that 11 fast bowlers chosen randomly from this group will have a mean maximum speed less than 145km/hr? A) Approx 0.75 (75%) B Approx 0.01 (1%) C Approx 0.25 (25%) D Approx 0.99 (99%) Question 5 1 Point A group of athletes all run a 100m sprint. The average of their times is 12.3s, with a standard deviation of 1.1s. If an athlete is randomly selected from the group, what is the probability that their time will be less than 10.9s? A 0.25 B) 0.90 C) 0.10 D) 0.000029 Question 6 1 Point In professional cricket one of the generally accepted requirements for a bowler to be considered express is that they have to be able to bowl above 145 km/hr. With this in mind, a contingent of pace bowlers had a bowling competition and measured the speed of their quickest ball. They found that the overall mean was 138.9km/hr with a standard deviation of 8.6 km/hr. What is the probability that a fast bowler chosen randomly from this group will have a maximum speed greater than 145km/hr? A 0.76 B 0.91 C 0.34 D 0.24