Looping through a random matrix to see if any element is >0.5

I'm trying to loop through all rows and columns of a random matrix to test whether each element is greater than 0.5

I have this (which, clearly is not working):

for random_number_matrix = rand(4,8)
    if random_number_matrix>0.5
        display ('greater than')
    end
end

Answer 1

[dpb]

random_number_matrix = rand(4,8);
isGt=(random_number_matrix>0.5);
display(random_number_matrix(isGt))

Answer 2

[per isakson]

Try

%%
for random_number_matrix = rand(4,8)
    display (random_number_matrix)
end

and read the documentation on for