A landscaper wants to compare the variability in germination rates between two different brands of grass seed. In order to do this, a random sample of 15 plots of land was planted with each type of grass seed. The number of days it took for the two different brands of seeds to germinate on each of these plots is presented in Table 5.20.

a. Does Brand 1 have more variability in the days it takes to germinate as compared to Brand 2?

b. What is the minimum variance ratio that a sample size of 14 can find?

Table 5.20

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7 10 11 70 10 91 39 13 17 Germination Rates (in Days) for Two Different Brands of Grass Seed Brand 1 Brand 2 7 8 7 8 13 39 10 12 96 27 7 6 14 9 7 10 8 9 10 8