An investigator analyzes the results of an experiment and determines that p < .05. Why does the investigator want to know the value of p?

A) to determine whether the results are statistically significant
B) to determine whether participants were randomly assigned to the two groups
C) to determine whether the results are replicable
D) to determine whether to use the mean or the median

p < .05

Refers to a statistical threshold indicating that the likelihood of the observed data occurring by chance is less than 5%, commonly used to infer significance in research findings.

Statistically Significant

A determination that a result from data analysis is not likely to have occurred by chance, suggesting a real effect or difference in the population sampled.

Investigator

A person who carries out a formal inquiry or investigation to discover and examine facts to establish the truth.