You wish to test the following claim ($\displaystyle {H}_{{a}}$) at a significance level of $\displaystyle \alpha={0.05}$.

      $\displaystyle {H}_{{o}}:\mu={61.2}$
      $\displaystyle {H}_{{a}}:\mu<{61.2}$

You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data:

Column A	Column B	Column C	Column D
70.8	56.4	45.8	61.6
63.1	50	55.8	62.3
39.9	52.3	62.7	73
62	46.2	55.5	56.9
55	59.9	38.6	47.5
54.4	49.4	39.3	46.5
45.8	68.5	45.5	65.7
37.8	45.5	53.9	37
68.5	46.9	37	59.3

What is the critical value for this test? (Report answer accurate to three decimal places.)
critical value =

What is the test statistic for this sample? (Report answer accurate to three decimal places.)
test statistic =

The test statistic is...

This test statistic leads to a decision to...

As such, the final conclusion is that...