Part 1: Given on the table are IQ scores of 108 BS ACCOUNTANCY students at SACLI with a meanIQ score of 113. Solve for the standard deviation using the following formula. I fi ( X - X ) 2 S = n - 1 Class Limits Frequency 90 - 98 6 99 - 107 22 108 - 116 43 117 - 125 28 126 - 134 9 Part 2: Another set of students composed of 108 BSBA MARKETING students of SACLI took also the IQ exam, with an average of 113 and standard deviation of 12 - Compare this information with the 108 BS ACCOUNTANCY students (as mentioned in Part 1), then decide which among these group of students are with a more dispersed IQ scores. Explain/Justify your answer. Part 3: Find the required for the following. 1.) A box contains 10 identical balls; 1 is white, 4 are black and 5 are red balls. What is theprobability of an event where three balls are selected at random, in which each color is represented? 2.) A two-digit number is formed from the digits - 1, 2, 3, 4, 5, and 6. Assume the digits cannotbe repeated, what is the probability that the number formed is an even number? Part 4: Find the required for the following. (Use Correlation Analysis Year Boat Sales (x1,000 US$) Boat Trailer Sales (x 1,000 US$) 2006 649 207 2007 619 194 2008 596 181 2009 576 174 2010 585 168 2011 574 179 2012 592 188 2013 610 202 2014 632 233 2015 655 241 Determine the direction and strength of the relationship between boat sales and boat trailer sales. b . Explain reasons that might explain why the number of boat trailers sold per year is less than the number of boats sold per year? c. If you are the Marketing Manager, reasons given in question "b" can be an opportunity for you to narrow the gap between the two different sale metrics. Yes or No, explain and what will be your actions