4. A random sample of 15 married couples both of whom earned income (in thousand pesos) showed the following; Income of Husband (x) Income of Wife (y) 13,000 8,000 18,000 12,000 24,000 16,000 56,000 48,000 25,000 30,000 19,000 16,000 40,000 32,000 52,000 60,000 8,000 42,000 19,000 17,000 26,000 25,000 18,000 19,000 What is the correlation coefficient of the income of both husband and wife? What is the degree of correlation. Is there a significant relationship between the husband and wife income? Interpret the result