Answer to Question #77782 in Statistics and Probability for rizwan

Question #77782
Q.4.A firm buys 3 shipments of parts each month .The purchasing agent selects at random from among four in state suppliers .What is the probability that the orders are placed with
a. in-state suppliers only.
b. out of state suppliers only.
c. at least in state suppliers only.
Q.5.Give explanations of the following terms:
a. Conditional probability.
b. Joint probability distribution.
c. Probability distribution.
d. Expected value of the random variable.
e.Combination and permutation.
1
Expert's answer
2018-06-04T09:05:08-0400
Q.4. A firm buys 3 shipments of parts each month. The purchasing agent selects at random from among four in state suppliers. The probability that the orders are placed with
a. in-state suppliers only is 100%, because only in-state suppliers are used.
b. out of state suppliers only is 0%, because only in-state suppliers are used.
c. at least in state suppliers only is also 100%.
Q.5.Give explanations of the following terms:
a. Conditional probability is a measure of the probability of an event (some particular situation occurring) given that (by assumption, presumption, assertion or evidence) another event has occurred.
b. Joint probability distribution is a probability distribution that gives the probability that each of X, Y, ... falls in any particular range or discrete set of values specified for that variable.
c. Probability distribution is a mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.
d. Expected value of the random variable is the long-run average value of repetitions of the experiment it represents.
e.Combination is a selection of items from a collection, such that (unlike permutations) the order of selection does not matter.
Permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting.
Source: https://en.wikipedia.org

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