# In a study of a possible correlation between the height in cm (X) and weight in kg (Y) of chimpanzees, a sample of 40 animals produces a correlation coefficient of r=+0.813 and a regression line with equation Y=0.34x + 19.5

In a study of a possible correlation between the height in cm (X) and
weight in kg (Y) of chimpanzees, a sample of 40 animals produces a correlation coefficient of r=+0.813 and a regression line with equation Y=0.34x + 19.5   What is the expected weight of an 80 cm tall chimpanzee?
a) 46.7 kg
b) 177.9 kg
c) 24.0 kg
d) 34.8 kg
e) 57.1 kg
Please tell me whether the correlation coefficient is used and how to get the answer.

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