Blog

Find the indicated probability.A die is rolled 50 times with the following results. OUTCOME 1 2 3 4 5 6 FREQUENCY 15 12 12 3 3 5 Compute the empirical probability that the die comes up a 5.

Use the empirical method to estimate the probability. Round your answer to 2 decimal places when necessary.You count 55 heads when you toss a coin 100 times. If you don’t know whether the coin is fair, what is the probability that the next toss will be heads?

Find the indicated probability. Round your answer to 6 decimal places when necessary.When two balanced dice are rolled, there are 36 possible outcomes. What is the probability that the sum of the numbers on the dice is 6 or 9?

Find the indicated probability. Round your answer to 6 decimal places when necessary.A bag contains 6 red marbles, 3 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue?

Use the at least once rule to find the indicated probability. Find the probability of getting at least one tail when tossing 6 fair coins.

Find the indicated probability. Round your answer to 6 decimal places when necessary.Find the probability of tossing 5 tails, then 5 heads, on the first 10 tosses of a fair coin.

Decide whether events A and B are overlapping or non-overlapping.A student is selected at random. Event A is that the student speaks Spanish and event B is that the student speaks Chinese.

Use the at least once rule to find the indicated probability. An unprepared student makes random guesses on all questions of her multiple choice test. If there are 16 questions and each question has 4 possible answers, what is the probability she will answer at least one question correctly?

Find the indicated probability.The following table show the results of a clinical trial for an allergy drug.  What is the probability that a randomly selected person either was given the allergy drug or did not improve? Round your answer to the nearest thousandth when necessary.

Find the indicated probability. Round your answer to 6 decimal places when necessary.What is the probability of not rolling a number larger than 4 with a fair die?