Check for accuracy please

Table 1.Yield response to fungicide applications per cultivar, averaged across locations and treatments in 2012.

	Yield (kg/ha)
Cultivar	n	Mean	Std. Dev.
Coker 9553	18	6407.75	580.1002
Terral LA841	18	5706.91	588.6358
Magnolia	18	6035.99	504.973
Pioneer 25R47	18	5884.04	1052.746
Overall	72	6008.6725	750.75420

3. In this exercise you will conduct five t tests (one for each cultivar; and one overall, meaning regardless of the cultivars). Table 2 below summarizes the yield response to fungicide application in 2011 (rather than in 2012). Use Tables 1 and 2 to test the hypothesis that wheat yield changed. That is, test the hypothesis that wheat yield is different from the yield levels specified in Table 2 below. In each of the five ttests:

a. State the null and alternative hypotheses for the population mean in words.(Points: 3)

The wheat yield for Coker 9553 in 2012 is equal to the 2011 yield

The wheat yield for Coker 9553 in 2012 is greater than the 2011 yield

The wheat yield for Terral LA841in 2012 is equal to the 2011 yield

The wheat yield for Terral LA841 in 2012 is greater than the 2011 yield

The wheat yield for Magnolia in 2012 is equal to the 2011 yield

The wheat yield for Magnolia in 2012 is greater than the 2011 yield

The wheat yield for Pioneer 25R47 in 2012 is equal to the 2011 yield

The wheat yield for Pioneer 25R47 in 2012 is greater than the 2011 yield

The overall wheat yield in 2012 is equal to the 2011 yield

The overall wheat yield in 2012 is greater than the 2011 yield

b. State the null and alternative hypotheses for the population meanusing the mathematical notation. (Points: 3)

H0:1 = 2

H1: 1 > 2

c. Type the formula. Make sure you provide the formula in each t test.(Points: 1)

t0 =

Z 05