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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
If all students in a class scored 100 on an exam what is the standard deviation?
Standard deviation is 0.
Why does the experimental probability and theoretical probability differ?
The theoretical probability of event X is the proportion of event X out of N trials as N tends to infinity. Thus, if you flip a coin many times, you get closer and closer to 1/2 being H and 1/2 being T.
This differs from experiment because all experiments take place with a finite number of trials.
8/100 or 2/25
How many ways the letter LEADING be arranged the vowels always come together?
the word leading contains 7 different letters,when the vowels eai r always together they can be supposed to form 1 letter
then we have to arrange ldng (eai)
now,5 letters can be arranged in 5!ways=120 ways
the vowels (eai)can be arranged in 3! ways=6ways
required no of ways =120*6=720
by deepika.R(RVS CET)
What does it mean for the probability of an event to be 100 percent or 1 explain in two paragraphs?
Paragraph #1:
A probability of 1, or 100%, indicates certainty. For example:
-- The probability of your room remaining full of air is virtually 100%.
-- The probability of the sun rising tomorrow is believed to be 100%.
-- An event must either occur or not occur, so if you take the probability
of it occurring, and add the probability that it won't occur, they must
add up to 100% .
Paragraph #2:
It was too much trouble for me to look up this information and then write about it.
So I posted the question on a Q&A website, and somebody there gave me the answer.
If it's wrong then it's his fault, but if it's correct, I'll be happy to take full credit for it.
Either way, I understand that even though I've given you an answer, you don't need it
and I haven't learned anything.
What does it mean to be prude?
The girl seems like a decent lady,she was probably raised to have respect and compassion for life in general. A lot of folks seem real fond of her. Do ya hear what I'm saying to yer!
Has anyone ever flipped a coin 24 times and got all heads?
The probability of flipping a coin 24 times and getting all heads is less than 1 in 16 million. (.524) It would seem that no one has ever done that.
What number do you have at the beginning when you multiply by 308 and point ten then divide by 3?
Any number at all.
What are all the possible outcomes of rolling 3 dice?
There are 216 possible outcomes and I do not have the time or inclination to list them all. But you can try all the ordered triplets of the form (x, y, z) where each of the letters can take any of the integer values from 1 to 6 (inclusive).
What is the sample space of tossing a coin 4x?
HHHH, HHHT, HHTH, HHTT,
HTHH, HTHT, HTTH, HTTT
THHH, THHT, THTH, THTT,
TTHH, TTHT, TTTH, TTTT
What does hounsfield units of 47 mean?
HU of water is 0, Air is -1000, Muscle is +40, bone is +100.
So 47 HU would be a little thicker than muscle.
What condition is probably the most necessary for a monarch to gain power why?
Monarchs historically came to power because they had the support of the people, the bureaucracy and the aristocracy.
Being popular would stop the people from revolting.
In Medieval Europe the church provided the clerks for the bureaucracy. Keeping on good terms with the bishops and the Pope would usually ensure the support of the bureaucracy.
The aristocracy was usually controlled by handing out prestigious offices. Often the nobles were as rich or richer than the king and had more fighting men. It was important to keep these people loyal.
The most important requirement for a new monarch to gain power was for the current monarch to be very unpopular.
The most important thing for a reigning monarch to gain more power was to make sure that all important decisions had to be made by him.
It provides support for the law of large numbers! It doesn't however mean anything exoterical.
What is probability of at least 2 heads on tossing 3 coins?
There are 8 permutations of three coins. Of these, 3 of them have two heads, so the probability of tossing two heads on three coins is 3 in 8, or 0.375.
However, you said, "at least", so that includes the case of three heads, so the probability of throwing at least two heads is 4 in 8, or 0.5.
T T T
T T H
T H T
T H H *
H T T
H T H *
H H T *
H H H *
What is the probability of getting 75 percent on a four question quiz?
The answer depends on how well you do in the quiz: that is not a random experiment.
Small samples and large population variances imply that the estimate for the mean will be relatively poor. Whether or not it will result in an underestimate or overestimate depends on the distribution: with a symmetric distribution the two outcomes are equally likely.
