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morr485
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Let the p.m.f. of M be defined by f(x)=x/8,x=1,3,4. What is the mean of M?
Is this the same an E(M) of a binomial?
Is this the same an E(M) of a binomial?
A p.m.f. stands for probability mass function. It is a function that assigns probabilities to discrete random variables, such as the outcomes of rolling a dice or flipping a coin.
The p.m.f. of M is defined by the function f(x)=x/8, where x=1,3,4.
The numbers 1, 3, and 4 represent the possible outcomes of the discrete random variable M. In this case, they could represent the values of a dice roll, for example.
The range of the p.m.f. is the set of all possible values that the function can take. In this case, the range is 0 to 1, as the probabilities assigned by the function must be between 0 and 1.
The p.m.f. can be used to calculate the probability of a specific outcome or set of outcomes occurring for a discrete random variable. It can also be used to calculate expected values and variance for the random variable.