Question: 11. [-/0.22 Points] DETAILS BBUNDERSTAT12 5.3.024.MI.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A large bank vault has several automatic burglar alarms. The probability is

11. [-/0.22 Points] DETAILS BBUNDERSTAT12 5.3.024.MI.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A large bank vault has several automatic burglar alarms. The probability is 0.55 that a single alarm will detect a burglar. LA USE SALT (a) How many such alarms should be used to be 99% certain that a burglar trying to enter is detected by at least one alarm? (Enter the smallest number of alarms needed to be at least 99% certain.) alarms (b) Suppose the bank installs nine alarms. What is the expected number of alarms that will detect a burglar? alarms Need Help? Read It Master It

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