1. why a normail distribution might not be a suitable model
2. c. ii) Obtain the equation of the regression line of ‘After’ on ‘Before’,
and hence write down an equation that may be used to model the
relationship between pulse rates for students before and after
f= 18.471+1.006*x i found that what next???
(iii) The lowest pulse rate ofastudent after running was 58 bpm. The
pulse rate for this student before running was 62 bpm. Using the
model from part (c)(ii), calculate the residual for this student to
the nearest whole number of bpm.
(iv) Brieﬂy explain why it would be inappropriate to use the model
from part (c)(ii) to estimate the pulse rate after running of a
student whose pulse rate is 140bpm before running.
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