4. Perform a hypothesis test to see if spring reading scores (using all the data) are different for students with low SES (low Socio Economic Status, meaning lower income levels) versus the other students.

a. What test did you use?

b. What is your H-null and your Ha?

c. What is your test statistic?

d. What is your p-value?

e. Conclusion: Do you reject H-null, why or why not?

f. Interpretation: Are spring reading scores are different for students with low SES versus the other students?

g. If you answered "yes" to the previous part, which group has a higher average score, and by how much do the scores differ, on average?