5. If the average age of retirement for the population in the Philippines is 65 years and with standard deviation of 5 years, what is the approximate age range in which 68% of people retire? A. 55 - 60 years B. 55-65 years C. 60 - 65 years D. 60 -70 years 6. What is the sum of the area that corresponds to the right of 0 and to the left of 0? A. 0.5 В. 1 С. 1.5 D. 2 7. Where can we find the area of specific region under the curve? A. Table of Areas of Geometric Figure B. Table of Areas Under Normal Curve C. Table of Contents D. Periodic Table
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 5, 6 and 7. Please choose the correct option. Thank you.
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