Question

1.Clearly state the null and alternative hypotheses

2.Sketch a graph of the rejection region labeled with the critical value(s)

3.Calculate the test statistic (showing all work to earn any credit)and p-value(give a range of values for t, chi-square, and F distributions)

4.Write conclusion (3 sentences)

3.In a study about how much ablade of grasswill grow in a weekusing a Name Brand Fertilizer anda Store Brand Fertilizer resulted in the following data, summarized below.

Treatment	n	XBAR	Standard Deviation
Name Brand	25	4.77	2.21
Store Brand	28	3.85	1.52

Conduct a 2-sample z-test at α = .10to determine if the mean length of a blade of grassdiffers significantly when Name Brand Fertilizeris appliedversus Store Brand Fertilizer.

Answer 1