A test has power 080 when p 35 The probability of rejecting

A test has power 0.80 when p = 3.5. The probability of rejecting the null hypothesis H_0 when p = 3.5 is 0.80.

Solution

No, power is probability of rejecting false null, and it depends on the test mean chosen in null hypothesis. If test mu=3.5, it is not false null, and probability of its rejection wont be 0.8.

It could be true if by \"mu=3.5\" the author intends to say \"test mean = 3.5\", and not \"true mean = 3.5\"