How does one extract/display the value of a function that is represented by a function_handle?

How does one extract/display the value of a function that is represented by a function_handle?

Here is my script:

=== BEGIN ===

firstindex = 0;
lastindex = 3;
x_vector = firstindex:lastindex;
x_vector = x_vector';
n = 10;
n_vector = n*ones(size(x_vector));
p=1e-04;
p_vector = p*ones(size(x_vector));
sum_prob = @(x_vector,n_vector,p_vector) (sum(binopdf(x_vector,n_vector,p_vector)))
=== END ===
I want to see the value (i.e., a number) of sum_prob, but all I get is this:
sum_prob = 
function_handle with value:
@(x_vector,n_vector,p_vector) (sum(binopdf(x_vector,n_vector,p_vector)))

[Torsten]

To see the value, set

value = sum_prob(x_vector,n_vector,p_vector)

[Roy Axford]

Torsten,

Thanks very much. That was all it took.

Best regards,

Roy