From the data below:
1.4 -2.9 2.1 5 3.5 -6.3 3.2 -4.1 4.5 5 -1.8 4.5
a. State the appropriate null and alternative hypotheses to be used to determine if the standard deviation goal is being met.
b. Report the critical value(s) for this test using a significance level of 5%.
c. Report the test statistic.
d. Draw a conclusion and in one sentence interpret your results.