Question 8.18

8.18 What's wrong

Explain what is wrong with each of the following.

  1. If the -value for a significance test is 0.5, we can conclude that the null hypothesis is equally likely to be true or false.
  2. A student project used a confidence interval to describe the results in a final report. The confidence level was negative 95%.
  3. The margin of error for a confidence interval used for an opinion poll takes into account that fact that some of the questions were biased.