Mathematics, 14.04.2020 19:16 joey333
The probability density function of X, the lifetime of a certain type of electronic device (measured in hours), is given by $$f ( x ) = \left{ \begin{array} { l l } { \frac { 10 } { x ^ { 2 } } } & { x > 10 } \ { 0 } & { x \leq 10 } \end{array} \right.$$ (a) Find P{X>20}. (b) What is the cumulative distribution function of X? (c) What is the probability that, of 6 such types of devices, at least 3 will function for at least 15 hours? What assumptions are you making? (d) Let Y be the lifetime of the same device measured in minutes. What is the probability density function of Y ?
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Mathematics, 21.06.2019 19:00, 4presidents
The distributive property allows you to say that 3(x − 1) = 3x −
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Mathematics, 21.06.2019 21:00, davidcortez27
Need match the functions with correct transformation. f(x) = -3x f(x) = |x-1|+3 f(x) = √(x+3) 1/2x² f(x) = (x+1)²-3 4|x| 1. compress by a factor of 1/2 2. stretch by a factor of 4 3. shift to the left 3 4. shift to the left 1 5. shift up 3 6. reflection
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The probability density function of X, the lifetime of a certain type of electronic device (measured...
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