10. (5 points) (Show work) Prepare a frequency distribution with a class width of 2 minutes by completing the following table. Checkout Time 5.0 - 6.9 7.0 - 8.9 9.0 - 10.9 11.0 - 12.9 13.0 - 14.9 Frequency Relative Frequency 11. (2 pts) (Show work) What percentage of the checkout times was at least 9 minutes? _______________________________________________________________ ___ 12. (4 pts) (Show work) To qualify for a mortgage, an applicant needs to have a good FICO credit score. We chose a random sample of 5 applicants from a local bank, and their FICO scores are 760, 660, 820, 580 and 620. What is the standard deviation of the FICO scores in the sample? Show your intermediate calculation in the following table; you may not need all columns based on the formula you use. (Round the answer to two decimal places) FICO Score x 760 660 820 580 620 Sum x2 x-mean (x-mean)2