3) 62, 52, 52, 52, 64, 69, 69, 78 For the given sample data, find the value of - a) the standard deviation. 9.066 b) P 15 Blank 2 c) The percentile rank of a score of 64 Blank 3 Blank 1 |Add your answer Blank 2 Add your answer Blank 3 Add your answer1 ) Solve the problem using the employment information in the table on Alpha Corporation Class Limits Frequency ( years of service) (Number of employees) 1-9 5 10 - 18 20 19-27 25 28 -36 10 30-45 W U 39-54