Speedy Goulash

2 pounds lean ground beef
2 cans beef broth
8 ounces elbow macaroni
1 tablespoon paprika
1 tablespoon garlic powder
1 teaspoon black pepper
1 cup sour cream

Put beef and onion in deep pot and brown. Add remaining ingredients except sour cream. Bring to a boil, stirring occasionally. Reduce heat to medium and simmer for 10-15 minutes. Stir in sour cream, and serve at once.