Which statistical process would be most helpful in determining the impact of various training routines on the points earned by a decathlon athlete?

Group of answer choices

Use a confidence interval with points earned as the mean

A hypothesis test with a null hypothesis that the number of points earned is less than the average points earned

Regression with points earned as the dependent variable

A hypothesis test with a null hypothesis that the number of points earned is greater than or equal to the average points earned

Regression with points earned as the independent variable