Scientists measured the size of Dungeness crab shells over a 10 year period from 1982 to 1992, both in
nature and in the laboratory
x = premoult (before shedding) shell size (mm)
y = postmoult (after shedding) shell size (mm)
This bivariate data set was modelled using a linear
least
squares regression line 9=0.9056x+26.729
with a correlation coefficient of r = 0.990.
Predict the value of a postmoult shell in mm, given
that premoult shell size was 90 mm.