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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 testing positive for the disease?
The probability isP(you have the disease)*P(the test shows positive when testing someone with the disease) +
P(you don't have the disease)*P(the test shows positive when testing someone without the disease).
The second category is particularly important if the disease is rare but the probability of a type II error is large.
Three coins are tossed the result is at most one head List the elements of the given event?
TTT, TTH, THT, HTT
Why do you think identical twins were more alike than fraternal twins?
Fraternal twins share most of their genetic material, by virtue of having the same parents. Identical twins, however, by definition share 100% of their DNA. This means, for example, that identical twins cannot ever be one of each gender, as fraternal twins often are.
Is a standard deviation of 18 considered high?
The standard deviation, in itself, cannot be high nor low. If the same measurements were recorded using a unit that was a ten times as large (centimetres instead of millimetres), the standard deviation for exactly the same data set would be 1.8. And if they were recorded in metres the sd would be 0.018
Phenotype: Black Bear x Brown Bear
Genotype: BB x bb
Possible
gametes: B B b b
Possible B B
crosses: b Bb Bb
b Bb Bb
Phenotype of offspring: Only Black bears
How many ways can the letters in the word mathematics be arranged?
11!/(2!2!2!)=11!/6=6652800 [It would be 11! if all of the letters were different, but you divide by two for each of the three letters which appear twice: m,a,t.]
How do you find the probability of rolling a number less than a certain number on one roll of a die?
The probability of rolling a number on a die is 1 out of the number of sides on the die. So, for a six sided die, the probability of rolling a 4 is 1/6. The probability of rolling a 4 or a 5 becomes 2/6 or 1/3. This is because there are two acceptable outcomes out of six. So when finding the probability of rolling a number less than x on a y sided die, it becomes x-1 / y. It is x-1 because the outcome is to roll less than the number, not less than or equal.
How many fives in a deck of cards?
there are four 5s each one a different suit ( hearts, spades, diamonds, clubs)
What is the probability of getting a number card in a deck of 52 cards?
There are 36 number cards, 12 face cards, and 4 aces.
So the probability of your first card from a full pack being a number card is 36:16, or 9:4.
How do you find the probability of 3 or more events?
Multiply the probabilities together.
For example, if we are looking at the same event occurring four times that has a 1 in four chance of occurring:
1st event=1/4
2nd event=1/16
3rd event=1/64
4th event=1/256
If coin is tossed seven times what is the number of sequences of heads or tails?
The number of sequences is 27 or 128.
Ratios are like the same thing as percents,you have to find a number out of another number, you dont have to be a mastermind to learn and teach them.
Is Jeff hardy having a girl or boy?
Jeff is having a girl i think.cause in one of his youtube videos they were talking about the baby and said it was a little girl. Sorry but You are wrong Jeff and Beth have not said what their having what Jeff did say is that they were not giving out when the baby is due or whether it is a boy or girl.
What is the odds of being dealt three sevens from a six deck shoe when playing blackjack?
It is 0.000404
How are experimental probability and theoretical probability the same?
They are methods of obtaining the probability of an event.
What is the probability of choosing a picture cards from a standard deck of playing cards?
The probability is 16/52 = 4/13
Where can one buy rolling briefcases?
Rolling briefcases can be purchased from many locations such as Macy's, Overstock, Walmart, Target, Amazon, eBay, Office Depot, Wayfair, LuggageOnline, OfficeMax and many others.
What are dependent and independent probability in math terms?
Two events are said to be independent if the outcome of one event does not affect the outcome of the other. Their probabilities are independent probabilities.
If the events are not independent then they are dependent.
How many possible outcomes are there if you pick a card from a deck of 52?
The are 52 possible outcomes if you pick a card from a deck of 52.
The probability of drawing a Jack on the first draw from a standard deck of cards is 4 in 52. The probability of drawing a heart on the second draw is 13 in 51 (if the Jack was not a heart) or 12 in 51 (if the Jack was a heart). Multiply these two probabilities together, and you get 52 in 2652, or about 0.01961 for the case of the Jack not being a heart, and 48 in 2651, or about 0.01811 for the case of the Jack being a heart.
What is the probability that a randomly selected electrician is a master?
10%. However an electrician shouldn't be a master to have the necessary ability for common services. A master electrician is only required for highly technical issues.
