About Type-II error, which one is wrong ?
A.
The probability of making a Type-II error is denoted by β.
B.
A Type-II error is committed when Ho is accepted while H0 is false.
C.
A Type-II error is committed when H1 is accepted while H0 is true.
D.
The value of β can be calculated only when we happen to know the true value of the population parameter being tested.