Answer: n=13 so
df = n-2 = 13-2 = 11
Hence CV = + or - 0.555
also r = -0.817 then t statistics is given by
Here r value does not lie between -0.555 and 0.555
So, we can conclude that r is significant because it is not between the positive and negative critical values.
Hence, option c is correct
Step-by-step explanation: