Please help with the question below:

Question 22 What is the correlation between stocks X and Z? State of the Economy Probability of Occurrence Stock X Stock Y Stock Z Expected Return Expected Return Expected Return Recession 35% 25% -10% 15% Average 45% 14% 8% 25% Boom 20% 4% 14% -10% O 0.96 O 0.51 O -0.26 O 0.26