Practice quiz: p-values honestly

4 questions. Pick an answer to see if it is right. You can try as many times as you like. These are for practice: the final test has different questions.

1. 1.A p-value of 0.03 means...

   there is a 3% chance the null hypothesis is trueif there were no effect, data this extreme would appear about 3% of the timethe effect is 3% largethere is a 97% chance the result is correct
2. 2.A small study finds p = 0.25. The best conclusion is...

   There is no effectWe can't tell yet; look at the confidence intervalThe effect is largeThe study is wrong
3. 3.What does an effect size tell you that a p-value does not?

   Whether the data is fakeHow big the effect isThe sample sizeNothing
4. 4.Which statement is from the ASA's 2016 principles?

   p < 0.05 proves a hypothesisA p-value does not measure the size or importance of an effectp-values should never be usedp = 0.05 means a 5% error rate