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Probability
The probability of a certain event is a number expressing the likelihood that a specific event will occur, expressed as the ratio of the number of actual occurrences to the number of possible occurrences. In mathematics, it is a measure of how often an event will happen and is the basis of statistics.
14,643 Questions
What is the probability that at least one tail appears when tossed 6 times?
you have 63 chances out of 64. i once witnessed a coin being tossed seven times and giving up 7 consecutive heads. we never tried it an eighth time, 7 heads and you had to go to the bar.
What is the chance that a second baby will be a girl?
At present the global probability of a new-born child being a girl is approx 0.48 and so this is a simple answer to the question. However, the gender of a child depends on the ages and genes of the parents and that will be different for each set of parents.
What is the probability of failing 75 times on a 2 percent chance of success?
If the probability of succeeding is 2%, then the probability of failing is 98%. The probability, then, of failing 75 times is 98%75, which is 22%.
What is the difference between natural infinite numbers and real infinite numbers?
A natural number is a counting number, such as 1, 2, 3. There are also known as whole numbers and integers. They can be infinitely large.
A real number is a number, possibly a natural number, but more possibly not, because there are an infinite number of real numbers that lie between any two natural numbers, such as 1, 1.1, 1.11, 1.111, 111112, etc, ad infinitum. Real numbers can also be infinitely large.
How many ways can you read 4 books from a shelf containing 12 books?
12 choices for the first book, 11 choices for the second, 10 choices for the third, and 9 choices for the fourth. 12 x 11 x 10 x 9 = 11880.
A fair coin was tossed 300 times. A head came up 156 times, how many times was it flipped on tails?
144
What are the chances of rolling a seven with 2 dices 2 times?
If they are normal cubes, the probability is 1, if you roll them often enough.
Does a correlation imply that one event causes the other event to occur?
Absolutely not! This is, unfortunately, a very common mistake.
For example, my age is pretty well correlated with the number of TV sets in the world. But my growing old does not make or sell TVs and the number of TVs in the world does not age me.
How many 2 letter arrangements are possible from 26 letters if no letter can be repeated?
Any 2 from 26 = 26 x 25 = 650 if ab and ba are regarded as separate, otherwise 325.
What is the Disadvantage of means deviation?
The disadvantage is that the mean deviation of a set of data is always zero and so does not provide any useful information.
When You roll 1 die Find Pthe number rolled is odd?
Number of possible outcomes = 6
Number of outcomes that are odd numbers = 3
P = 3/6 = 50% .
How do you figure out what the probability of rolling a three and then a four using a standard dice?
If you keep rolling the die, the probability is 1.
If you require a 3 and a 4 in the first two rolls, the answer is (1/6)*(1/6) = 1/36
How many different ways can the letters of the word judge?
If your asking how they can be rearranged then...
There are 5 letters. 5 can go in the first spot then 4 in the second and 3 in the third 2 in the fourth spot and 1 in the fifth. 5*4*3*2*1 = 120
What are the odds of having a baby born with 3 extremely rare diseases?
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How does increasing the sample size affect the sample error of the mean?
It should reduce the sample error.
