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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 24 heads in a row when flipping a fair coin?
1 in 224, which is 1 in 16777216.
What is the probability of rolling a 3 and flipping a head?
probability of rolling a 3 = 1/6
probability of flipping a head = 1/2
therefore, overall = 1/12
12/27 reduces to 4/9
numerator = the number of acceptable outcomes
denominator = total number of outcomes (12 boys + 15 girls)
What is the probabilty of flipping a coin landing heads up and rolling a 5 or a 6 on a dice?
If they are fair, 1 in 6.
How many different five-person relay teams can be chosen from 7 students?
Any 5 from 7 is (7 x 6)/2 ie 21.
What is 43 is 120 percent of what number?
The number is 35.83333
The problem would look like: 43 = 1.20x
43/1.20 = 1.20x/1.20
35.8333 = x
CHECK:
43 ?=? 1.20(35.8333) YES, it equals.
If the probability of an event is 3 to 7 what are the odds it will not occur?
four out of seven times
3.92
If the probability of a defect is 0.015 what is the probability of not having a defect?
1-.015 = .985
n event A is said to be less probable than an event B if the probability of A occurring is smaller than that of B occurring.
The normal curve would represent the distribution of?
American women in terms of their physical heights.
No. The probability that a continuous random variable takes a specific value is always zero.
about 25
In which discrete distributions does the probability of a success vary from one trial to the next?
In situations like this it's more common to model the systems as what are called stochastic processes, in this case probably Markov chains.
i think 6 out of 9 right? then you simplify to equal 1 out of 3.:)
What is the probability of getting either a sum of 6 or atleast one 6 in the roll of pair of dice?
Each cube can fall in 6 different ways.
Two cubes can fall in (6 x 6) = 36 ways.
16 different successes:
1, 5
2, 4
3, 3
4, 2
5, 1
1, 6
2, 6
3, 6
4, 6
5, 6
6, 6
6, 1
6, 2
6, 3
6, 4
6, 5
Probability of success = 16/36 = 44.4%(rounded)
How many simple events are in the sample space when three coins are tossed?
There are 4 events: 3 heads, 2 heads 1 tail, 1 head 2 tails, and 3 tails.
