In your sample, there are two groups of people: those who have a high school degree and those who have a bachelor's degree or higher. The following table shows the sample statistics of the two groups. You hypothesize that in general those who have a bachelor's degree or higher should earn more than those who have a high school degree. The estimated standard error is $360. Education Group 1 High school Group 2 BA or higher Sample size 361 mean $19,500 st.dev $3,800 169 $20,500 $3,900

MATLAB: An Introduction with Applications
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Suppose that you conducted a t-test at the .01 level with a different hypothesis: you wondered if the two groups had different incomes. What would be your decision?

(A) Reject the null hypothesis.


(B) Fail to reject the null hypothesis.

In your sample, there are two groups of people: those who have a high school degree
and those who have a bachelor's degree or higher. The following table shows the
sample statistics of the two groups. You hypothesize that in general those who have
a bachelor's degree or higher should earn more than those who have a high school
degree. The estimated standard error is $360.
Education
Group 1
High school
Group 2
BA or higher
Sample size
361
mean
$19,500
st.dev
$3,800
169
$20,500
$3,900
Transcribed Image Text:In your sample, there are two groups of people: those who have a high school degree and those who have a bachelor's degree or higher. The following table shows the sample statistics of the two groups. You hypothesize that in general those who have a bachelor's degree or higher should earn more than those who have a high school degree. The estimated standard error is $360. Education Group 1 High school Group 2 BA or higher Sample size 361 mean $19,500 st.dev $3,800 169 $20,500 $3,900
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