Converting of word conditions into inequalities

Converting of word conditions into inequalities - : X 7 ....

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Converting of word conditions into inequalities.doc Mar 18’10 Let X be a discrete random variable which may take on values of 0, 1, 2, 3, … Present the following word conditions in the form of an appropriate inequality with symbols or ≤ . 1. A variable X may take on a value which is at least 10. Solution : X ≥ 10 . (In other words, a variable X may take on a value which is 10 or more.) 2. A variable X may take on values which are no less than 7. Solution : X ≥ 7 . (In other words, a variable X may take on a value which is 7 or more.) 3. A variable X may take on values which do not exceed 12. Solution : X ≤ 12. (In other words, a variable X may take on a value which is 12 or less.) 4. A variable X may take on values which are no more than 7. Solution
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Unformatted text preview: : X 7 . (In other words, a variable X may take on a value which is 7 or less.) 5. A variable X may take on values which are more than 7. Solution : X 8 (In other words, a variable X may take on a value which is 8 or greater.) 6. A variable X may take on a value of 5 or fewer. Solution : X 5 7. A variable X may take on values fewer than 10 . Solution : X 9 . (In other words, a variable X may take on a value which is 9 or less.) 8. A variable X may take on values in the interval [20, 30] . Solution : 20 X 30 . (Endpoints are included in the interval.) 9. A variable X may take on values in the interval ( 20, 30 ) . Solution : 21 X 29 . (Endpoints are not included in the interval.)...
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