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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
The first set would have most data points very close to 50 while in the second set they would be much further away.
What is the probability of getting a sum of 14 if four dices thrown together?
The probability is 146/1296 = 0.1127
What does a high z score mean?
It means that the random variable in question is considerably greater than the mean.
It is the sampling distribution of that variable.
What is the probability of being dealt a jack given that you are dealt a red card?
1/26 under the assumption that one is using a standard 52 card deck with no jokers. 1/27 if the jokers are included.
What is the probability a coin will land on tails?
50% probablility, or 1/2, that is, a one in two chance.
There is an equal chance that the coin will land either heads or tails.
What is probability sampling and non probability sampling?
In probability sampling,every item in the population has a known chance of being selected as a member.In non-probability sampling, the probability that any item in the population will be selected for a sample cannot be determined.
random.
What would be the experimental probability of rolling a die 50 times and getting 4?
The experimental probability can't be predicted. If it could, then there wouldn't be
any reason to do experiments.
The probability of rolling a die 50 times depends on how passionately you want to
see what's going to happen if you do.
There are six different ways a single die can come up on each roll. So the probability of
rolling any particular number between 1 and 6 on each roll is 1/6 or (16 and 2/3) percent.
If it isn't, then the die isn't a fair die.
The die has no memory, so the probability of any particular number is the same on every roll,
even if the same number has or hasn't come up on the previous 100 or 1,000 consecutive
rolls. If the probability of any outcome depends on what has come before, then the laws
of probability aren't operating, and it's not an honest game.
The possibility is favorable. Now we'll go ahead and calculate the probability,
which is the thing you actually need to know when you're standing at the table
and it's your roll:
The die can come up in 6 ways on each roll. That's 36 different possibilities on 2 rolls.
Number of ways to make greater than 9 on the 2 rolls = 4 .
5, 5
5, 6
6, 5
6, 6
Probability of more than 9 on 2 rolls = 4/36 = 1/9= (11 and 1/9) percent .
What is the probability of getting sum 7 if you throw two dice?
With two dice the following totals are possible
....... Dice A .. Dice B
- 2 - 1 ..... 1
- 3 - 1 ..... 2
- 3 - 2 ..... 1
- 4 - 1 ..... 3
- 4 - 2 ..... 2
- 4 - 3 ..... 1
- 5 - 1 ..... 4
- 5 - 2 ..... 3
- 5 - 3 ..... 2
- 5 - 4 ..... 1
- 6 - 1 ..... 5
- 6 - 2 ..... 4
- 6 - 3 ..... 3
- 6 - 4 ..... 2
- 6 - 5 ..... 1
- 7 - 1 ......6
- 7 - 2 ..... 5
- 7 - 3 ..... 4
- 7 - 4 ..... 3
- 7 - 5 ..... 2
- 7 - 6 ..... 1
- 8 - 2 ......6
- 8 - 3 ..... 5
- 8 - 4 ..... 4
- 8 - 5 ..... 3
- 8 - 6 ..... 2
- 9 - 3 ..... 6
- 9 - 4 ..... 5
- 9 - 5 ..... 4
- 9 - 6 ..... 3
- 10 - 4 ..... 6
- 10 - 5 ..... 5
- 10 - 6 ..... 4
- 11 - 5 ..... 6
- 11 - 6 ..... 5
- 12 - 6 ..... 6
So, there are 36 different combinations of how the dice might land and 6 of those total 7. Therefore it is 6 chances in 36 that you'll get 7, which reduced to 1 in 6.
What to do when the z score is not in the z score chart?
The average z score chart lists z scores with three significant figures.
For example, you can find the z score -1.81 on the chart, but not -1.812 or -1.818.
In the case that you wish to look up a z score with more than three significant figures, round it to three significant figures and then use the chart.
OR
You can also use a calculator if you wish to get more accurate results. The link for calculator is mentioned below.
Is mean directly proportional to standard deviation?
No. Not at all. Whoever told you that fails statistics forever.
Is variance directly proportional to standard deviation?
Variance isn't directly proportional to standard deviation.
What is the probability of rolling a 1 on 2 dice?
Assuming normal dice, the answer is 0, since it is impossible to roll a 1 on 2 dice = the least you can get is 1 + 1 = 2.
Can the experimental probability of an event be a negative number.if not why?
No; because probability can never be less than zero.
You can use the z test for two proportions.
The link below will do this test for you.
How do you Give the probability in simplest form?
First you have to give the probability as a fraction. Then, you can simplify it by dividing the numerator and denominator by a number until it is reduced to the simplist terms
For example, 40/50 can be reduced to 4/5 chance- but it is still the same
Statements about youth services is false?
The services are only available to youth who have dropped out of school.
:D hope this is really right! :) <3
What are the odds of rolling a 6 with two dice?
If the question is: What are the odds of rolling a die with a 6 when rolling two
dice ? . Answer: There are 36 outcomes when rolling a pair of dice, 10 of them
have a die with a single 6 and 1 of them has two 6. So the probability of rolling
one die with a 6 when rolling a pair of dice is P =
10/36 =
0.2777... . The odds
would be (10 to 26) 5 to 13.
If the question is: What are the odds of rolling a sum of 6 when rolling two dice ?
Answer: there are 5 outcomes out of the 36 that give the sum of 6. They are;
(1,5), (5,1), (2,4), (4,2), and (3,3). So the probability for this event is P =
5/36 =
0.13888... . The odds would be 5 to 31.
