Type 1 error is to ______ as Type 2 error is to _______. a. alpha; beta b. beta; alpha c. null; void d. void; null Type 1 error is also known as an alpha error and a type 2 error is known as a beta error. Both involve the null hypothesis. Type 1 errors reject the null when it is true. Type 2 errors accept the null when it is false.