Question

A researcher selects a sample and administers a treatment to the individuals in the sample. if the sample is used for a hypothesis test, what does the null hypothesis (h0) say about the treatment?

1. thuthuy
The null hypothesis (H0) says about the treatment is that it does not affect the scores.

### What is hypothesis testing?

Hypothesis testing is the statistical method that uses the data from a sample to conclude a population parameter or a population distribution.
There are two types of hypothesis testing. They are the null hypothesis and the alternative hypothesis.
• If the obtained value is less than the threshold value then the null hypothesis is accepted and the alternative hypothesis is rejected.
• If the obtained value is greater than the threshold value then the null hypothesis is rejected and the alternative hypothesis is accepted.

### What is a null hypothesis?

• The null hypothesis says that there is no difference between the sample means of the two groups.
• This is a statement about a population parameter.
• Where the possibilities are the same.
It is given that,
A researcher selects a sample and administers a treatment to the individuals in the sample.
A hypothesis test is conducted on the sample.
So, the null hypothesis (H0) says about the treatment is that it does not affect the score obtained.