Hypothesis testing
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Problem (Two tailed test)
A decade-old study found that the proportion, p, of high school seniors who believed that "getting rich" was an important personal goal was 80%. A researcher decides to test whether or not that percentage still stands. He finds that, among the 225 high school seniors in his random sample, 164 believe that "getting rich" is an important goal. Can he conclude, at the 0.05 level of significance, that the proportion has indeed changed?
Question
--H0 (null hypothesis):
-H1 (alternative hypothesis):
-Type of test statistic: (Z, t, F, chi squared)
-The value of the test statistic (round to at least 3 decimal places):
-The p-value (round to at least 3 decimal places): ___
-Can we conclude that the proportion of high school seniors who believe that "getting rich" is an important goal has changed? (yes, no)
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Solution Summary
This posting provides process of hypothesis testing for a two-tailed test: whether 80% of high school seniors believe that "getting rich" is an important personal goal.
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