2007 1. An agricultural engineer tests six different fertilizers on grain yield, with each of these tested on 8 different fields. The table below lists the result of the tests, in kg/ha. Fertilizer 1 Fertilizer 2 Fertilizer 3 Fertilizer 4 Fertlizer 5 Fertilizer 6 Field 1 1998 2002 1997 2018 2002 Field 2 2010 2013 2000 2014 1998 2005 Field 3 2006 2016 2000 2010 2002 2004 Field 4 2015 2010 1995 2006 2005 2016 Field 5 1999 2010 1997 2013 2019 2011 Field 6 2005 2017 1995 2018 2008 2015 Field 7 2008 2012 2014 1997 2013 2006 Field 8 2004 1995 1998 2005 2016 2015 Can we conclude that the yields of these fertilizers are all similar, at the 90% confidence level? Does the conclusion change if we would perform the examination at the 99% confi- Calculate the Tukey-Kramer critical value at 90% confidence level. At 90% confidence, check for which fertilizers the yields are significantly different than for which others. 2007 1. An agricultural engineer tests six different fertilizers on grain yield, with each of these tested on 8 different fields. The table below lists the result of the tests, in kg/ha. Fertilizer 1 Fertilizer 2 Fertilizer 3 Fertilizer 4 Fertlizer 5 Fertilizer 6 Field 1 1998 2002 1997 2018 2002 Field 2 2010 2013 2000 2014 1998 2005 Field 3 2006 2016 2000 2010 2002 2004 Field 4 2015 2010 1995 2006 2005 2016 Field 5 1999 2010 1997 2013 2019 2011 Field 6 2005 2017 1995 2018 2008 2015 Field 7 2008 2012 2014 1997 2013 2006 Field 8 2004 1995 1998 2005 2016 2015 Can we conclude that the yields of these fertilizers are all similar, at the 90% confidence level? Does the conclusion change if we would perform the examination at the 99% confi- Calculate the Tukey-Kramer critical value at 90% confidence level. At 90% confidence, check for which fertilizers the yields are significantly different than for which others