Question
Asked Oct 26, 2019

A random sample of 226 Chinese Americans has finished an average of 12.6 years of formal
education with a standard deviation of 3.9. Using a 95% confidence level, are Chinese Americans
significantly more educated than the national average of 12.2 years?

check_circleExpert Solution
Step 1

The provided data is,

Sample size, n
Sample mean,
226
= 12.6
Sample standard deviation, s =3.9
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Sample size, n Sample mean, 226 = 12.6 Sample standard deviation, s =3.9

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Step 2

The null and the alternative hypotheses are,

H 12.2
H 12.2
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H 12.2 H 12.2

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Step 3

The t-test statistic can...

t =
12.6-12.2
3.9
/226
-1.54
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t = 12.6-12.2 3.9 /226 -1.54

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