A biased coin was tossed 350 times and the number of tails observed was 178. Calculate the relative frequency of getting heads.
A boy flipped a coin 100 times, and he got heads 58 times. Calculate his experimental probability of getting heads while playing this game.
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?
In a festival, 28 of the first 68 people who played a dart throwing game won the top prize, and 7 people won a lesser prize. Given that the rest of the participants did not win any prizes, find the experimental probability of not winning.
The table shows the results of a survey that asked 30 students to vote for their favorite sport.
|Number of Students||12||9||3||6|
What is the probability that a randomly selected student voted for basketball?
A survey of 80 students found that 40 students preferred biology, 24 preferred chemistry, and 16 preferred physics If there are 200 students in the whole school, how many are expected to prefer biology?
A fair die is rolled 300 times. Calculate the expected number of times a prime number is rolled.
The probability that a biased die will land on an even number is 0.6. If the die is rolled 80 times, how many times is it expected to land on an even number?
Arthur plays a card game with his friend and the result can be either win, lose, or draw. Each time they play, the probability that Arthur will win is 0.5, and the probability he will lose is 0.3. If they play 50 games, what is the expected number that will end in a draw?
A factory produced 1 600 calculators in one day. They took a sample of those calculators and found that were defective. What is the expected number of defective calculators produced that day?