You are conducting a study to see if the mean doctor's salary (in thousands of dollars) is significantly more than 87. A random sample of 26 doctors' salary in thousands of dollars is shown below. Test the claim using a 5% level of significance. Give answer to at least 4 decimal places. Salary 92.68 84.58 86.16 77.02 84.33 89.16 92.45 88.06 83.56 98.98 92.08 91.09 94.99 84.34 93.58 87.55 88.4 84.9 89.84 100.49 97.87 78.56 74.55 91.65 96.27 99.35 What are the correct hypotheses? Họ: Select an answer v ? v thousand dollars H1: Select an answer v ? v thousand dollars

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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.