The following data were gathered to use in reconciling the bank account of Conway Company: Balance per bank $23,900 Balance per company records 8,700 Bank service charges 50 Deposit in transit 5,500 Note collected by bank with $450 interest 9,450 Outstanding checks 11,300 a. What is the adjusted balance on the bank reconciliation?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?