What is a minimal number of wires counted from 70 a cable must have in order to maintain the reliability of the cable (and thus of the system) to at least 0.98?

1 Explain in Example 5.8 (Chapter I, pages 45-46) of the Lecture Notes (a) how A was obtained and (b) what went wrong with the Poisson approximation. (5 pts) Problem 2 is computational, and it should be rendered using the R-programming (no other language or tool).

Also, your work must be rendered independently, without any collaboration with others. A joint or similar work won’t be accepted. Hint. See Example 5.3 on page 39-41 and a source code in the notes.

2 A parallel reliability system consists of cables of wires supporting a bridge. Each cable must have at least 70 wires. If the reliability of a single wire is 0.15, what is a minimal number of wires counted from 70 a cable must have in order to maintain the reliability of the cable (and thus of the system) to at least 0.98? (10 pts)