turn into specific “Null: Ho” and “Alternative: Ha” hypotheses. I also asked you
ID: 3356803 • Letter: T
Question
turn into specific “Null: Ho” and “Alternative: Ha” hypotheses. I also asked you to write the null and alternative hypothesis using the correct “formula”, noting whether it was directional or non-directional depending on whether the question calls for an increase/decrease or simply a change! Finally, I asked you to tell me under what circumstances you, as a researcher, would be committing a Type I and Type II Error.
People register to vote, but they don't always vote. A 1994 study asked registered voters in the U.S. whether they had voted in the most recent election. Of those aged 21-24 years, 42% said they had voted. Do fewer such registered voters actually vote, nowadays?
Hypothesis:
Type I and Type II Error
Type I Error:
Type II Error:
Explanation / Answer
We need to test the claim whether fewer such registered voters actually vote, nowadays. Hence, if the true proportion of registered vters vote today is p then:
Ho: p > 0.42
Ha: p < 0.42
This will be a one directional (left) hypothesis since alternative hypothesis contains "<" sign.
Type I error: Reject Ho and conclude that p < 0.42 whereas in actual p > 0.42
Type II error: Do not reject Ho and conclude p > 0.42 whereas in actual p < 0.42
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.