For problem 18 on pg 337, why does the solution use 0.025 for level of significance when the problem clearly states 0.05% level of significance?
Please advice.
Thanks.作者: d2rockstar 时间: 2013-8-20 20:32
Don’t have the L1 curriculum in front of me, but it’s probably because the problem involves a two-tailed test.作者: bkballa 时间: 2013-8-20 20:37
If the hypothesis is an equal sign ( = ), it is a two-tailed test.
You have to divide the level of significance by two.
