Question

Suppose you learn that SATs and ACTs are not at all predictive of college success. You suspect that high school grades will be a much better predictor. Which of the following hypotheses is best stated for your study?

a) High school grades have a statistically significant relationship with college success.
b) High school grades are related to college success.
c) Better high school grades are more strongly related to college success.
d) High school grades are related to college success, such that students who had a higher GPA in high school have more success in college.

What best describes the null hypothesis?

a) A hypothesis that predicts no statistically significant relationship between the two variables under study.
b) A hypothesis that suggests that there is a statistically significant relationship between the variables under study.
c) A hypothesis that suggests that there is a strong relationship among the variables under study.
d) A hypothesis that predicts a negative relationship between two variables under study.

Answer 1

The best-stated hypothesis for the study is that high school grades are related to college success, such that students who had a higher GPA in high school have more success in college. The null hypothesis predicts no statistically significant relationship between the two variables under study.

Step-by-step explanation:

The best-stated hypothesis for the study is option d) High school grades are related to college success, such that students who had a higher GPA in high school have more success in college.

The null hypothesis is best described as a) A hypothesis that predicts no statistically significant relationship between the two variables under study.