The bank has a Head Office in Delhi and a branch at Mumbai. There are long customer queues at one office, while customer queues are short at the other office. The Operations Manager of the bank wonders if the number of customers at one branch is more variable than the number of customers at another branch. A research study of customers is carried out by him. The standard deviation of Delhi Head Office customers is 5.5678, and that for the Mumbai branch is 4.4721. The sample size for Delhi Head Office is 11, and that for the Mumbai branch is 21. Conduct this test as a two-tailed F-test (despite being interested in testing for greater variation) use a level of significance of 10%. Choose an appropriate response to the instruction above: Calculate the test statistic (accurate to 2 dp) What is the critical value ? (2 dp) F = v