Question 3: Suppose that 1 in every 6 Jordanian has private medical insurance. If 15 Jordanian were selected, using R code: a) What is the probability we have 2 Jordanians with private insurance? b) What is the probability that the 6th person we interview is the first that has private insurance? c) What is the probability of having a third person with private insurance at the 14th interview? d) What is the expected value and standard deviation in part (b)?
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
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