8. It is a weighted average of the possible values that the random variable can take. A. Mean C. Standard Deviation B. Variance D. Probability Distribution 9. The appropriate formula in finding the mean of discrete random variable is C. E(x) = Hx = Ex-p (x) D. E(x) = Hx = Ex p (x)² A. E(x) = Hx =Ex•p (x) B. E(x) = Hx = Ex+p (x) 10. What formula is used to find the variance of discrete random variable? A. o = E(x+µH)²•p(x); for all possible values of x B. o = E(x –H)².p(x); for all possible values of X C. o = Ex p(x); for all possible values of x D. o? = E(P(x) + µ)² · x ; for all possible values of x
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.
Kindly answer items 8, 9 and 10. Please choose the correct answer. Thank you.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
