MATLAB: How to generate floating points randomly???

Question

Hello! i am new in matlab and need help, as em writing code for generating matrix of size 20-by-4. rowsize=20, colsize=4 and need to generate between [0 1], suppose i want matrix having random values like [0.25 0.5 0.05 0.20] and so on…. but when i run my code then it returns me 20-by-4 matrix of 0's and 1's…..which function i should use to get required results…please help and thanks in advance..

 { matrix_rand=randint(rowsize, colsize, [0 1]); it returns
     1     0     0     0
     1     1     1     0
     1     1     0     1
     0     0     0     0
     0     1     0     0
     1     1     1     1
     0     1     0     0
     1     1     0     0
     1     1     1     0
     0     0     0     1
     1     1     0     1
     1     0     1     1
     1     0     0     1
     1     0     0     0
     1     1     1     0
     0     1     0     1
     1     0     0     1
     0     0     0     1
     1     1     0     0 
but when i write rand(), then it returns nothing

Answer 1

matrix_rand = rand(rowsize, colsize);