solve in excel and please show all steps.

6. One of the industrial robes designed by leating producer of servomechanisms has four major components Components' reliabilities are 98,95 94 and 90. All of the components must function in ander for the robot to operate effectively a Compute the reliability of the robot . Designers want to improve the reliability by adding a backup component. Due to space limitations, only one backup can be added. The backup for any component will bave the same reliability as the unit for which it is the backup. Which component should get the backup in order to achieve the highest reliability c. If you backup with a reliability of 92 can be added to any one of the main components, which component should get it to obtain the highest overall reliability 6. One of the industrial robots designed by a leading producer of servomechanisms has four major components. Components' reliabilities are 98, 95, 94, and 90. All of the components must function in order for the robot to operate effectively. a. Compute the reliability of the robot. b. Designers want to improve the reliability by adding a backup component. Due to space limitations, only one backup can be added. The backup for any component will have the same reliability as the unit for which it is the backup. Which component should get the backup in order to achieve the highest reliability? c. If one backup with a reliability of 92 can be added to any one of the main components, which component should get it to obtain the highest overall reliability? chinar mamned in