In an agricultural experiment, the effects of two fertilizers on the production of limes were measured. Nineteen randomly selected plots of land were treated with a brand new fertilizer, and 27...

In an agricultural experiment, the effects of two fertilizers on the production of limes were measured. Nineteen randomly selected plots of land were treated with a brand new fertilizer, and 27 randomly selected plots were treated with an old fertlizer. The number of pounds of harvested limes were measured from each plot. The results are given below. (Round answers to two decimal places.)

Find a 90% confidence interval for the difference between the mean weight of the harvested limes.


margin of error:

lower limit:

upper limit:





Based on the results, is the new fertilizer better than the old fertilizer?