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Question 2 A group of second year Forestry students conducted an experiment to compare the germination time (in days) for pine seeds sown in a green house with those sown outside the green house. Ten (10) seeds of pine were sown in the green house and ten (10) other seeds of pine were sown outside the green house. The number of days it took each seed to germinate was recorded and the following were the results. Greenhouse 41 35 33 36 40 46 31 37 34 30 Outside 52 57 62 55 64 57 56 55 60 59 Calculate the mean, variance and standard error of the mean for each data set. Test for equality of variances for the two data sets. Use α=0.10. Do the data provide sufficient evidence to indicate that the mean germination time for seeds sown in the greenhouse was less than for seeds sown outside? Use α=0.05. State three assumptions which are common for both tests conducted in b) and c).
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