Home / Expert Answers / Advanced Math / a-software-package-consists-of-12-programs-5-of-which-must-be-upgraded-the-following-is-the-pmf-f-pa450

(Solved): A software package consists of 12 programs, 5 of which must be upgraded. The following is the pmf f ...




student submitted image, transcription available below
A software package consists of 12 programs, 5 of which must be upgraded. The following is the pmf for this situation. If 4 programs are randomly chosen for testing: a) What is the probability that at least 2 of the 4 must be upgraded? Write your answer as a reduced fraction. A b) What is the probability that at most 2 must be upgraded? Write your answer as a reduced fraction. c) What is the expected number of programs (out of the 4) that must be upgraded? Write your answer as a reduced fraction. A


We have an Answer from Expert

View Expert Answer

Expert Answer



A software package consists of 12 programs, five of which must he upgraded
Hence   
4 programs are randomly chosen for testing, so   
We have an Answer from Expert

Buy This Answer $5

Place Order

We Provide Services Across The Globe