Answer:
Step-by-step explanation:
Given that for a given paired sample data set that consists of "X" data and "Y" data, the covariance is 1000.
We know that correlation coefficient between x and y is
Given that covariance =1000
and sample std dev of x = 75 and y = 100
Hence
Hence correlation coefficient is positive moderately strong with value = 0.40
Fr like whats the answer choice
(5 | -2) should be the solution of the equations
So it workt for c)
c)
3*(5) - 5*(-2) = 25
(5) + 5*(-2) = -5