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Mathematics, 17.04.2020 04:36 swagjlove32

5.4. The probability density function of X, the lifetime of a certain type of electronic device, is given by and 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?

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5.4. The probability density function of X, the lifetime of a certain type of electronic device, is...
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