Question 6.68

6.68 What’s wrong?

Here are several situations in which there is an incorrect application of the ideas presented in this section. Write a short explanation of what is wrong in each situation and why it is wrong.

  1. A report says that the alternative hypothesis is rejected because the -value is 0.002.
  2. A significance test rejected the null hypothesis that the sample mean is 120.
  3. A report on a study says that the results are statistically signifcant and the -value is 0.87.
  4. The statistic had a value of 0.014, and the null hypothesis was rejected at the 5% level because .