question b please

Dfinity promises its customers that network services are 90% reliability. The network consists of three serial nodes, each of which must work for the network to be operational. Consistent with its customer guarantee, the reliability of each node is 90%; however, the company has been receiving complaints about its service (a) a Your answer is correct Calculate the reliability of the network (Round answer to 3 decimal places, es. 2.750.) Reliability of the network 0.729 Are customer complaints justified? Yes eTextbook and Media Attempts: 2 of 3 used Using multiple attempts will impact your score. 5% score reduction after attempt 2 (b) Dhnity is considering adding nodes to its network structure so that each of the current nodes is backed up by a lesser node with a reliability of 75% What is the reliability of this revised network? (Round answer to 3 decimal places, s. 2.750. Do not round intermediate calculations