The city council of Santa Maria, CA finished an experimental program intended to provide information regarding increasing tomato yields on local farms. Two samples of 99 plants were randomly selected from local farms. In the experimental sample, synthetic fertilizer was used; meanwhile, in the control sample, no fertilizer was used. At the end of the harvest season, the output of both samples was measured in terms of tomatoes yielded.
Experimental Plants: mean = 373, s.d. = 14
Control Plants: mean = 391, s.d. = 11
Based on the data, was the program effective in increasing tomato yields? For this question, it is obvious from just looking at the mean and s.d. that the control plants had a larger yield. That is not the point of the question. The point of the question is to show the steps by which you arrived at the answer by using the proper equations, i.e. how to do the combined standard error, and finding the p- and t-values. The last tutor who attempted to answer this question did not provide a complete answer. Please do not answer if you do not know how to do the equations to find the s.e.d. or the p and t-values.