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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 having 3 girls?
33% for every girl... (quick but wrong)
2. for a given solo pregnancy, we have the b-g option, or 1/2.
For two pregnancies, we have bb, bg, gb, gg.
for three pregnancies, we have bbb, bbg, bgb, bgg, ggg, gbg, ggb, gbb.
Of which some outcomes are equivalent in terms of numbers. (e.g. ggb, gbg, bgg)
However only one of the eight outcomes gives three girls, so the answer is the probablilty is 1/8.
An easier method, and necessary when the number are greater, is to say the probability is 1/2 in one pregnancy.
And since (for our purposes) the pregnancies are independent events, the cumulative probability is (1/2)3 which = 1/8 or 12.5% or 0.125.
What is the theoretical probability of not rolling a 2 while the cube rolls 50 times?
The theoretical probability of not rolling a 2 while the cube rolls 50 times (calling it
event E) is: P(E) = (5/6)50 = 1.09884819... x 10-4 = 0.000109884810... ≈ 0.011%
When the value of Z -0.84 what is the area probability to the right?
-0.84= 0.2005
0.84=0.7096
so since the question is asking to the right the answer should be 0.7096
The usual sampling distributionof the difference between means is a what?
There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.
There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.
There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.
There is no such thing as "the usual sampling distribution". Different distributions of the original random variables will give different distributions for the difference between their means.
What are the chances of becoming a PE teacher?
In this economy, no job is easy to get. However, PE teachers do not require too much prior knowledge, so the odds compared to other teaching jobs are very good.
When a situation is assessed it is?
When you assess the situation, you review the problem and look over possible outcomes for the situation.
Can saliva sample testing help determine ovulation?
At-home kits that use saliva instead of urine to help determine ovulation have made it more convenient for women trying to conceive children to track their hormonal cycles, eliminating a lot of guesswork.
What is the probability of choosing a heart if the first card drawn without replacement a spade?
It is 13/51.
What are the chances of a coin landing on heads 35 times in a row?
In 34 or fewer tosses, the answer is 0. In infinitely many tosses, the answer is 1. The answer depends on the number of tosses and, since you have chosen not to share that critical bit of information, i is not possible to give a more useful answer.
What is the probability of rolling a complementary number with a dice?
In two successive rolls, it is 1/6 otherwise it is a near certainty.
Could any coin with a head on each side have been made at a mint or are they ALL novelty coins?
No, the mint has two dies to stamp the coins. One die for heads ond for tails. They fit into different parts of the machine. If you have a two headed coin you have a novelty coin. While there are no known 2-headed U.S. coins, there are 4 certified examples of genuine 2-tailed U.S. coins. And there are about 25 known genuine 2-headed or 2-tailed coins from other countries. Details about this can be seen here : http://varietynickels.com/articles/twotailed.htm The U.S. Mint designs their dies with different slots in the heads-side dies than those in the tails-side dies to prevent this error from happening. So you can see the likelihood of you having a genuine 2-headed or 2-tailed coin is infinitely small -- even less than your chances of winning the lottery. Most coins with two heads were struck at a mint the regular way, but they were cut in half and the two heads were put together by a skilled craftsman.
The two events are independent, so the answer is simply the multiple of the probabilities of the two events. So joint prob = 1/6 * 1/2 = 1/12
Probability distribution function of Hotelling's T-square distribution?
there is no pdf in hottling t sq test there is only mdf or it has multivariate distribution function
The answer depends on how many cards are drawn, whether or not at random, from ordinary decks of cards, with or without replacement.
How many times would you expect to roll a number less than 5 when you toss a die 360 times?
Since a cube has 6 sides, you have a 4 in 6 chance of getting a number less than 5 each time you roll the dice. You would take how many times you want to roll it (360), divide it by the number of sides (6), and multiply it by 4 since you know you have a 4 in 6 chance. So it should be 240. This is strictly mathematical though and you should not consider it accurate since there are many variables when rolling it.
Why probablity sampling is better than non probablity sampling?
i think it give equal chance for all.
What is the intersection of the probability and severity of a hazard called in the RM process?
Risk Level
The answer depends very much on where in the world the employee is.
mean = 11ft
standard deviation = 1.6ft
x=13
z= 13-11 = 1.25
1.6
P(0<=x<=11)=.5
P(11<=x<=13)=.3944
P(x<13)=.8944
