A survey of 92 people found that 55 people support Team A, 30 people support Team B, and 7 people support neither. What is the probability that a person supports Team A?
A soft drinks factory produces 1400 bottles a day. The factory tested a sample of 400 units and found that 6 were defective. By calculating the experimental probability that a bottle is defective, work out how many defective bottles would be expected in a day.
A sample of 64 people found that 36 of them watch Channel A, 29 of them watch Channel B, and 11 watch both channels. What is the probability that a random person from the sample only watches Channel A?