"single factor anova with blocks. the forest service conducted an experiment on the growth rate of eight provenances (trees growing at a particular place of origin) of gmelina arborea (the treatments) were compared with respect to the girth at breast-height (gbh) of the trees attained since 6 years of planting (the response variable). since planting location could be a factor in growth, they used three blocks as plot locations that represented different soils and gradients.
a. list the degrees of freedom for the provenances and the blocks.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.