A hi-tech company has introduced a new flash disk. Some dealers and customers have complained that some of the new disks are defective. In order to investigate this the company randomly selected 64 disks and tested them. They found that 8 of the 64 were defective. Find a 95% confidence interval for the proportion of all flash disks that are defective. Test if more than 10% of the flash disks are defective. Show all the steps.