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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 of getting two heads one tail when you spin 3 coins?
First work out the probability of the first two coins being heads and then the last being tails. This is 1/2 x 1/2 x 1/2 which is 1/8
The next step is to find out how many different orders the coins can come in. In this case there are 3 possible orders (HHT, HTH, and THH). Multiply this by the above probability and you get 3/8. Therefore the probability of getting two heads and one tail is 3/8
What is the probability of spinning a prime number?
The answer depends on how many numbers on the spinner, and their distribution. Without that information, it is not possible to answer the question.
What is the probability of picking a red ace out of a standard deck of cards?
The probability of pick a red ace out of a standard deck of cards would be 1/26 because there are two read aces, the ace of diamonds and the ace of hearts.
What is the probability of picking an m from the word mathematics?
If picked at random, the answer is 2/11.
What is the probability of getting three cards of same color from a deck?
It is a certainty if you pick 5 cards.
What is the probability of flipping a coin and getting heads 5times?
I f you flip the same coin 5 times in a row, chances are 1/32 ( 1/2 each flip multiplied 5 times)
Ans: 1 in 32
What is the probability of not landing on a 6?
On a 6-sided die, the probability of not having a six is 5/6, or 83 1/3 %
What is the percentage of scores less than 80 if mean is 100 and standard deviation is 20?
z = (80 - 100)/20 = -20/20 = -1
Look up a table of z-scores: Probability = 15.87%
15% of 80kg is 12kg.
Just multiply 80 by 0.15 to get 12.
Six times the number of different outcomes on the spinner.
How many different ways can five books be arranged on a shelf?
The number of permutations of five things taken five at a time is five factorial, or 120.
What does large mean absolute deviation means?
Large means something or an object that is big in size.
How are experimental probability and theoretical experiment alike?
They are both estimates of the probability of outcomes that are of interest. Experimental probabilities are derived by repeating the experiment a large number of times to arrive at these estimates whereas theoretical probabilities are estimates based on a mathematical model based on some assumptions.
When two dice are rolled what is the probability that both will be a five?
if you multiply the number of rolls you did you will get the answer
When rolling five dice what is the probability that all 5 dice will be the same number?
The probability of rolling the same number on five dice is (1/6)4, or about 0.0007716.
