8. After recording the pizza delivery times for two different pizza shops, you conclude that one pizza shop has a mean delivery time of 30 minutes with a standard deviation of 3 minutes. The other pizza shop has a mean delivery time of 29 minutes with a standard deviation of 7 minutes. If you like the pizza from both shops equally well, explain which one you would order from and why you chose that one.
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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