Question

The null and alternative hypotheses for z -test refer to which of the following?

• A. The population before the treatment.

• B. The sample before the treatment.

• C. The sample after the treatment.

• D. The population after the treatment.

Answer 1

Answer:

Here we can say that the null hypothesis 7 alternative hypothesis for z test refers to the population mean which have to test before the treatment. It is due to that if we have any

Here hypothesis testing in measurements is a path for you to test the aftereffects of a review or investigation to check whether you have important outcomes.

You're fundamentally trying whether your outcomes are substantial by making sense of the chances that your outcomes have occurred by some coincidence.

In the event that your outcomes may have occurred by some coincidence, the analysis won't be repeatable thus has little use.

So the null and alternative hypotheses for z -test refer to the population before the treatment.

i.e.,

option A