Question

What is the purpose of a null hypothesis in scientific research?(1 point)
Responses

to serve as a starting assumption that there is no effect
to serve as a starting assumption that there is no effect

to ensure the research is always correct
to ensure the research is always correct

to make the research process more complicated
to make the research process more complicated

to determine the sample size required for the study
to determine the sample size required for the study

Answer 1

to serve as a starting assumption that there is no effect

Explanation: The null hypothesis is the default claim tested in statistical inference — it assumes no relationship or effect, and researchers seek evidence to reject it.