All three attached pics are in order and part of the same problem.

12 Check my work U.S. Manufactured General Aviation Shipments, 2009-2015 Year etr 1 2tr 2 2tr 3 2tr 4 Total 2009 3:49 409 391 485 1, 634 2 2010 246 374 269 439 1, 328 2011 256 293 points 277 476 1, 302 2012 302 350 336 514 1, 502 2013 327 411 350 526 1, 614 2014 353 380 384 516 1, 633 eBook 2015 296 350 356 538 1, 540 References Click here for the Excel Data File (a) Plot the data on airplane shipments. Plot A Plot B Plot C US Aviation Quarterly Shipments (2009-2015) US Aviation Quarterly Shipments (2009-2015) US Aviation Quarterly Shipmer 600 600 600 500 500 500 400 400 400 M 300 300 300 200 200 200 Mc Graw Hill12 O Plot A O Plot B O Plot C O Plot D 2 points (b) Can you see seasonal patterns? eBook O Yes References O NO (c) Use MegaStat or Minitab to calculate estimated seasonal indexes and trend. (Round your answers to 3 decimal places.) Otri Qtr2 Qtr3 Otr4 Index Index Index Index 0.805 (d) In which quarters are shipments highest? Lowest? (You may select more than one answer. Click the box with a check mark for the correct answer and double click to empty the box for the wrong answer.) Highest Q1\f