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Mathematics, 11.02.2020 23:57 oofoofoof1

A system may become infected by some spyware through the internet or email. Sixty percent of the time the spyware arrives via the internet, forty percent of the time via email. If it enters via the internet, the system detects it immediately with probability of 0.8. If via email, it is detected with probability 0.6. What percentage of times is this spyware detected?

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