From the details that are contained in the question, the portfolio standard deviation is 0.0544 or 5.44%
w1 = weight of euros 1 = 500000/800000
w2 = weight of canadian dollars = 300000/800000
Standard deviation 1 = 8%
Standard deviation 2 = 3%
Correlation coefficient = 0.30
(w1*σ1)² + (w2*σ2)² + (2* w1*σ1* w2*σ2 * 0.30)^0.5
[tex]((0.625*0.08)^{2} +(0.375*0.03)^{2} +(2*0.625*0.08*0.375*0.03*0.3)^0^.^5\\\\= 0.0544[/tex]
Therefore the portfolio standard deviation is given as 0.0544 or 5.44%
Read more on standard deviation here: https://brainly.com/question/475676