Mathematics, 20.12.2019 02:31, pssluke

Correct me if i'm wrong:
8ai) 4
8aii) 1/5 + 9/40 + 3/16 + 1/5 = 65/80 = 13/16

i need with b & c
8c) i know some of the conditions but i'm not sure which ones to use.
* there isn't a parameter.
* the events must be random and independent of each other.
* the events happen singly and one at a time
* the events must happen at a constant rate.

Correct me if i'm wrong: 8ai) 4 8aii) 1/5 + 9/40 + 3/16 + 1/5 = 65/80 = 13/16

Answers: 2

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Correct me if i'm wrong:
8ai) 4
8aii) 1/5 + 9/40 + 3/16 + 1/5 = 65/80 = 13/16