A researcher looking for evidence of extrasensory perception (ESP) tests 1000 su
ID: 1189567 • Letter: A
Question
A researcher looking for evidence of extrasensory perception (ESP) tests 1000 subjects. Nine of these subjects do significantly better (P < 0.01) than random guessing.
Step 1:
Is it proper to conclude that these nine people have ESP? Explain your answer.
Yes, This follows directly from the 1% significance level.
Yes. This follows directly from the statistical significance.
No. The sample size was not large enough for any statistical inference.
No. Since the tests were performed at the 1% significance level, as many as 5 subjects may have done significantly better than random guessing just by chance.
Step 2:
What should the researcher now do to test whether any of these nine subjects have ESP?
He should ask them whether they really have ESP or they just guessed.
He should design a new test and draw new data.
He should repeat the test for the entire sample.
He should check whether their results lie within the boundaries of the confidence interval.
Yes, This follows directly from the 1% significance level.
Yes. This follows directly from the statistical significance.
No. The sample size was not large enough for any statistical inference.
No. Since the tests were performed at the 1% significance level, as many as 5 subjects may have done significantly better than random guessing just by chance.
Step 2:
What should the researcher now do to test whether any of these nine subjects have ESP?
He should ask them whether they really have ESP or they just guessed.
He should design a new test and draw new data.
He should repeat the test for the entire sample.
He should check whether their results lie within the boundaries of the confidence interval.
Explanation / Answer
No. Since the tests were performed at the 1% significance level, as many as 5 subjects may have done significantly better than random guessing just by chance.
He should design a new test and draw new data.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.