Find the indicated probability.You toss four coins and record the number of tails. You repeat this many times. The results are shown below.  Result Frequency 0 tails 3 1 tail 6 2 tails 14 3 tails 2 4 tails 1 Find the empirical probability of getting 4 tails. Round your answer to the nearest thousandth.

Use the empirical method to estimate the probability. Round your answer to 2 decimal places when necessary.Of 1768 people who came into a blood bank to give blood, 394 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.

Use the at least once rule to find the indicated probability. Find the probability of at least one 3 in 9 rolls of a fair die.

Use the empirical method to estimate the probability. Round your answer to 2 decimal places when necessary.Sebastian lives in a rainy city. In his city, in  15  of the past  36 years there have been more than  100  days of rain. What is the probability that there will be more than  100  days of rain next year in his city? Give your answer as a fraction.

Find the indicated probability.The following table displays the number of siblings for students at one middle school. Find the probability that a randomly selected student in the school has 2 siblings. Round your answer to the nearest thousandth. Number of Siblings Frequency 0 184 1 255 2 123 3 51 4 25 5 9 6 5 7 2

Determine whether the events A and B are independent.A balanced die is rolled twice. Event A: The sum of the two rolls is 8 Event B: The first roll comes up 3

Find the indicated probability. Round your answer to 6 decimal places when necessary.Three fair coins are tossed. Find the probability of getting the same thing on all three coins.

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 was given a placebo or improved? Round your answer to the nearest thousandth when necessary.

Find the indicated probability.You toss four coins and record the number of tails. You repeat this many times. The results are shown below.  Result Frequency 0 tails 3 1 tail 6 2 tails 14 3 tails 2 4 tails 1 Find the empirical probability of getting 4 tails. Round your answer to the nearest thousandth.

Use the at least once rule to find the indicated probability. The probability of winning $20 in a particular lottery is 0.03. What is the probability that you will get at least one $20 winner if you buy 20 tickets?