alexandrialo1044 alexandrialo1044

02-01-2023
Mathematics

Answered

A software package consists of 12 programs, five of which must be upgraded. if 4 programs are randomly chosen for testing. required:
a. what is the probability that at least two of them must be upgraded?
b. what is the expected number of programs, out of the chosen four, that. must be upgraded?

Answer :

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