Is it good practice to use static methods for generating random numbers?

I've written the following code for generating random float and double numbers.

public static class Statics
{
    private static readonly Random random = new Random();
    private static readonly object syncLock = new object();

    public static double getRandomDouble(double min, double max)
    {
        lock (syncLock)
        {
            return random.NextDouble() * (max - min) + min;
        }
    }

    public static float getRandomFloat(float min, float max)
    {
        lock (syncLock)
        {
            return (float)random.NextDouble() * (max - min) + min;
        }
    }
}

Is it OK that I'm using static class and methods for generating random numbers?

My program relies heavily on these methods so I want to make sure that the produced numbers are indeed random.