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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 the results are all heads or tails when you flip a coin 5 times?
50%. there are only 2 choices heads or tails and that doesn't change no matter how many times you flip the coin
How can you explain different scales in statistics?
A scale is the entire amount of values that a variable could in principle have.
For example a variable "age in years" could have any value that is a number equal to or above zero, so it's scale consists of: 0, 1, 2, 3, 4, 5 ...................... and so on, and theoretically it even includes values like 3.5 (= 3 years and 6 months).
So THAT is a scale.
There are DIFFERENT TYPES of scales, which are:
nominal scales: When you can only check whether two values from this scale are EQUAL OR DIFFERENT then it's a nominal scale.
(e.g. a variable "Name of a Person")
ordinal scale: if you can also check which of two values from this scale is "larger" then it's an ordinal scale.
interval scale: if you can also give a precise answer about the difference between two values from this scale, then it's an interval scale.
(e.g. "Year of Birth")
ratio scale: If you can also calculate precisely how much bigger or smaller one value of this scale is than another (as in "twice as big as...." or "0.34 timese as big as") that it's a ratio scale.
(e.g. "weight" or "number of children")
What three coins are most probable to select out of pennies dimes and nickels?
More information is needed. You have to know how many of each coin are in the sample set in order to determine a probability of selecting any particular coin or combination of coins.
Please post a new, separate question with that information.
When a six-sided dice is thrown what is the probability of getting a 1?
A die, many dice.
So when you say a six-sided dice, do you mean six-sided dice, and if so, how many of them?
Or, do you mean only one six-sided die? In that case, assuming the ide is fair, the answer is 1/6.
There's no such commonly recognised thing as 'indirect proportion'. If you mean Inverse Proportion, this is when one quantity decreases as another increases by the same factor.
As an example, the time it takes to run 100 m is inversely proportional to the speed you run at - if you double your speed, it takes you half as long.
Many maths problems run along the lines of "If it takes three men four days to build a wall, how long will it take five men to build the same wall?". This is inverse proportion. As you increase the number of men by a factor of 5/3, you decrease the time taken by a factor of 5/3, so the answer here is 2.4 days.
I hope that helps!
Without a functioning crista ampullaris the semicircular cana have no function?
The crista ampullaris that does not function will also affect the function semicircular canal of the inner ear. This is because the crista ampullaris is located in the semicircular ear canal. It senses angular acceleration and deceleration.
Usually not. You can see their eggs though. These are called nits - from which comes the expression nit-picking!
Toxic shock syndrome (TSS) is a rare but potentially fatal disease caused by a bacterial toxin. Different bacterial toxins may cause toxic shock syndrome, depending on the situation. The causative agent is Staphylococcus aureus.
This infection can occur via the skin (e.g. cuts, surgery, burns), vagina (via tampon), or pharynx. However, most of the large number of individuals who are exposed to or colonized with toxin-producing strains of S. aureus or S. pyogenes do not develop toxic shock syndrome. One reason is that a large fraction of the population has protective antibodies against the toxins that cause TSS.[1] It is not clear why the antibodies are present in people who have never had the disease.1
1. http://en.wikipedia.org/wiki/Toxic_shock_syndrome
What is the probability of tossing a sum greater than 7?
The answer will depend on what is being tossed!
What is the probability of rolling one dice and getting a even number or a number less than 6?
1. The event that you get an even number of a number less than 6 is a certainty.
In fractions what is the probability of choosing an ace from a standard deck of playing card's?
The probability of drawing an Ace from a standard deck of 52 cards is 4 in 52, or 1 in 13.
How do you find probability using 4 colors of marbles?
The answer depends on the probability of WHICH event you want to find!
If the hand must contain three 8's and to cards that are not 8's - the total number of possibilities is 2801.
Why is the o in oF not capitalized on the tails side of the penny?
This is an example of artistic license on the part of the designer. It's simply a stylized usage, and is found on some other denominations such as the Walking Liberty half-dollars of 1916-47. Other U.S. coins carry stylized wording as well. The best example is the use of the Roman "v" to represent the vowel "u" in the motto In God We Trust. Peace dollars (1921-35) and Standing Liberty quarters (1916-30) both use that style. Quasi-Roman usage was quite popular during the early part of the last century. It can also be seen in inscriptions on buildings, medals, and jewelry from that period.
Assuming that the probability of 1 woman have a boy is .5
Binomial Distribution can be used to solve the problem.
b(k;n,p)
= (n choose k) p^k * (1-p)^(n-k)
k= number of boys
n= number of trials
p= probability of boy
Assume p is equal to probability of having a boy
First question we are looking for four boys. ie k=4
n = 10
=(10 choose 4) 0.5^4 * (1-.5)^4
= 0.8203
Question 2)
At least 7 girls means 1 boy or 0 boys will be born
Case 1) 0 boys born
Use binomial
(10 choose 0) 0.5^0 * (1-.5)^8
= 0.00390625
Case 2) 1 boy born
(10 choose 1) 0.5^1 * (0.5)^7
=0.0390625
Case 1 + Case 2= 0.04296875 Probability of at least 7 girls
What is the answer of x plus y equals 2?
It is the set of infinitely many points on a straight line in 2-dimensional space. The points satisfy the equation x + y = 2 or y = 2 - x
What is a mistake of hasty generalizing which comes from a non representative i e biased sample?
Biased generalizing
How are theoretical and experimental probability similar?
they are alike because they both have the last word "probability"
If a small marble is dropped straight downward what is the initial velocity of the marble?
The initial velocity is zero.
In most basic physics problems like this one the initial velocity will be zero
as a rule of thumb:
the initial velocity is always zero, unless otherwise stated, or this is what you are solving for
Cases where the initial velocity is not zero
examples
a cannon ball is shot out of a cannon at 50 mph
a ball is thrown from at a speed of 15 mph
etc
What is the probability that the genotype AAA will be produced by the parents AAA x AAA?
offspring will be produced in following
AA :Aa:aa and is in the ratio of 1:2:1
so the probabiltiy is 50%
