0
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 probability that she will pick a tennis of 4 that she has?
if they are all tennis balls, then 100% percent
You see, if you are drawing in a piece of paper, then it is two dimensional.
Give an example of how to find the standard deviation?
Look at the Wikipedia article on "Standard deviation" - it includes an example right at the beginning.
What are odds of all six numbers on six-sided dice appearing if you roll seven dice?
The probability is 15120/279936 (35/648 in lowest terms), or about .054 (about 1 time in every 18.5 tries). Verified by simulation.
Usually people asking for odds actually mean probability, but in case it really is what you want, the odds would be 35:613 (ratio of win:lose).
How to get it: Think about rolling the dice one at a time, and start with the (simpler) case where it's the first six dice that have all six numbers. The number of ways of arranging the six numbers in the first six positions is 6!. Then the seventh die can be anything, so there are 6! * 6 ways that the first 6 dice have all 6 numbers and the 7th can be anything.
Call the 7th die (the one that can be anything) the "odd die". The odd die doesn't actually have to be last - it could be rolled anywhere in the order, so it could be the 1st die, the 2nd, etc. This means we have to multiply our previous number by 7 to account for every possible position of the odd die. (we're up to 6! * 6 * 7 ways to succeed)
Finally, if you think about it, we've counted every ordering twice, since the odd die must match one of the other dice. For example: one way to succeed that the above method counts is 1 2 3 4 5 6 1 (with die #7 being the odd die). This exact same roll is also counted when we consider die #1 to be the odd die, and it matches the last die. Therefore we've counted the same roll for two different positions of the odd die. Since this happens no matter what or where the odd die is, we will have counted each successful roll exactly twice. So divide our last count by 2 to get the final answer of 15120 ways to succeed.
There are 6 ^ 7 = 279936 possible outcomes when rolling 7 dice, so the probability is 15120/279936.
What is the value of a minute?
well, just a single minute keeps alot value for e.g within a minute we breathe more than 40 times,just in a minute 1000s of galons of water are filled,just in a single minute life-taking or life-giving decisions are taken!
aaahh............!!!!!!!!!!
JUST IN ASINGLE MINUTE......!!!! A minute is priceless if it's the last one you've got. Otherwise, it's useless judging from how most people use them.
Why do the ads cost between 3.0 and 50 millonds for just on 30 secons ad?
well its a combination of factors, its the old problem of supply and demand, you have 100+million people watching the show, which means it is one of the BIGGEST prime time spots for any commercial to have, plus over the years commercials have become exceedingly more complex and wondrous, its to the point where everyone expects amazing commercials for the superbowl, and knowing this the companies that air it (NBC) can basically hold a bidding war for the air time, 3.5million for 30 seconds was for the time itself, the rest is wasted on development of the commercials themselves, i hope i helped
What certain types of jobs is probability used in?
-- Insurance underwriting
-- the Casino industry
-- Medical trials
-- Public opinion surveying
-- the spectator side of professional sports
There are 6C2 = 6*5/(2*1) = 15 pairs.
1/8 or 12.5%
There is not enough information to answer the question sensibly. Is it implied that out of 200 students not one knew the answer to any one of the seven questions? And that all pupils had to make random choices for each question? Is that at all credible?
Standardising the observation ensures that the mean is 0 and the standard error is 1. Otherwise the plot could be located anywhere and be concentrated or spread out.
What is the probability of getting a sum of 5 if the dice is tossed 120 times?
Prob(at least one 5 in 120 throws) = 1 - prob(no 5s in 120 throws)= 1 - (5/6)120= 0.999 999 999 69 = almost 1.
Prob(at least one 5 in 120 throws) = 1 - prob(no 5s in 120 throws)= 1 - (5/6)120= 0.999 999 999 69 = almost 1.
Prob(at least one 5 in 120 throws) = 1 - prob(no 5s in 120 throws)= 1 - (5/6)120= 0.999 999 999 69 = almost 1.
Prob(at least one 5 in 120 throws) = 1 - prob(no 5s in 120 throws)= 1 - (5/6)120= 0.999 999 999 69 = almost 1.
How likely something is, it is like chance. Not yes or no, but leaning more likely than not. The amount that something is bound to happen. The probability of rain tonight is good means, it will probably rain. The probability of the bookstore running out of books, is slim to none. It shouldn't.
the likeliness of something happening.
