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two; success or failure
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What are four requirements for binomial distribution?
A binomial experiment is a probability experiment that satisfies the following four requirements:1. Each trial can have only two outcomes or outcomes that can be reduced to two outcomes. These outcomes can be considered as either success or failure.2. There must be a fixed number of trials.3. The outcomes of each trial must be independent of each other.4. The probability of a success must remain the same for each trial.
When do you use binomial distribution?
One would use binomial distribution if and only if the experiment satisfies the following conditions1. There is a fixed number of trials.2. Each trial is independent of one another.3. There are only two possible outcomes (a Success or a Failure).4. The probability of success, p, is the same for every trial. An example of an experiment that has a binomial distribution would be a coin toss.1. You would toss the coin a n (a fixed number) times.2. The result of a a previous toss does not affect the present toss (trials are independent).3. There are only two outcomes - Heads or Tails.4. The probability of success (whether a head is considered a success or a tail is considered a success) is constant at 50%.
What is each observation of an experiment?
It could be viewed as a trial.
If an event has a 1 in 4 chance of occurring what is the probability of it happening to one individual in a sample of five?
If we assume that the probability of an event occurring is 1 in 4 and that the event occurs to each individual independently, then the probability of the event occurring to one individual is 0.3955. In order to find this probability, we can make a random variable X which follows a Binomial distribution with 5 trials and probability of success 0.25. This makes sense because each trial is independent, the probability of success stays constant for each trial, and there are only two outcomes for each trial. Now you can find the probability by plugging into the probability mass function of the binomial distribution.
What is the parameters that determine a Binomial Distribution?
The binomial distribution has two parameter, denoted by n and p. n is the number of trials. p is the constant probability of "success" at each trial.
What are four requirements for binomial distribution?
A binomial experiment is a probability experiment that satisfies the following four requirements:1. Each trial can have only two outcomes or outcomes that can be reduced to two outcomes. These outcomes can be considered as either success or failure.2. There must be a fixed number of trials.3. The outcomes of each trial must be independent of each other.4. The probability of a success must remain the same for each trial.
When is binomial distribution used?
Binomial distribution is learned about in most statistic courses. You could use them in experiments when there are two possible outcomes and each experiment is independent.
Are outcomes in binomial distributions dependent on each other?
No.
What are the requirements for the binomial probability distribution?
The requirements are that there are repeated trials of the same experiment, that each trial is independent and that the probability of success remains the same.
When do you use binomial distribution?
One would use binomial distribution if and only if the experiment satisfies the following conditions1. There is a fixed number of trials.2. Each trial is independent of one another.3. There are only two possible outcomes (a Success or a Failure).4. The probability of success, p, is the same for every trial. An example of an experiment that has a binomial distribution would be a coin toss.1. You would toss the coin a n (a fixed number) times.2. The result of a a previous toss does not affect the present toss (trials are independent).3. There are only two outcomes - Heads or Tails.4. The probability of success (whether a head is considered a success or a tail is considered a success) is constant at 50%.
How is selecting one marble from each of 2 bags and tossing 2 coins similar?
It is not. There are only two possible outcomes for each toss of a coin whereas the number of possible outcomes when selecting a marble from a bag will depend on the numbers of distinct marbles in each bag. The coin toss generates a binomial distribution the marbles experiment is multinomial.
How many outcomes do you get from rolling 3 coins?
23 or 8 outcomes. In any experiment with two outcomes, if you do the experiment n times there are 2n outcomes. This about each time you roll the coin have two possible outcomes, H or T. So if you roll it 2 times, you have 4 possible outcomes. HH, HT, TH or TT. Do it one more time and you have 8 outcomes. HHH, HHT, HTH, THH TTT TTH THT HTT Notice there are 1 outcome with 3 heads, 1 with 3 tails 3 with two heads 3 with two tails This pattern follow the binomial theorem. The coefficients of the binomial (H+T)3 are 1 3 3 1. The same numbers as we have above!
What is each observation of an experiment?
It could be viewed as a trial.
Is a binomial distribution symmetric?
No, in general is not. It is only symmetric if the probability of success in each trial is 0.5
What is a binomial distribution?
The binomial distribution is one in which you have repeated trials of an experiment in which the outcomes of the experiment are independent, the probability of the outcome is constant.If there are n trials and the probability of "success" in each trail is p, then the probability of exactly r successes is (nCr)*p^r*(1-p)^(n-r) :where nCr = n!/[r!*(n-r)!]and n! = n*(n-1)*...*3*2*1
What is each repetition of an experiment?
Each repetition is called a trial or sometimes a replicate.
Is rolling a die 10 times to see what you get binomial?
No. It is multinomial because you have more than two possible outcomes each time.
