Using the California School data set from your textbook,you run the following regression: 
= 698.9 - 2.28 STR
n = 420,R2 = 0.051,SER = 18.6
where TestScore is the average test score in the district and STR is the student-teacher ratio.Using heteroskedasticity robust standard errors,you find 
while choosing the homoskedasticity-only option,the standard error is 0.48.
a.Calculate the t-statistic for both standard errors.
b.Which of the two t-statistics should you base your inference on?
Definitions:
Self-esteem
One's overall subjective emotional evaluation of their own worth.
Self-serving Bias
A cognitive bias that causes individuals to attribute their successes to internal factors while attributing failures to external factors.
Spotlight Effect
The tendency to overestimate the extent to which others notice and evaluate our appearance, performance, and mistakes.
Narcissism
A personality trait characterized by a long-term pattern of exaggerated self-importance, the need for admiration, and a lack of empathy for others.
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