. Degrees of freedom. . Magnitude of the t statistic. 2 3 4. Magnitude of the critical value 75*. 5. Pvalue. 6. Margin of error (assuming the same confidence level). 7. Width of confidence interval (assuming the same condence level). 3. Refer to the football kick distance in Problem 1. The data suggest that information about getting ready in the morning in problem 1. A survey of kickers and scientists suspect that a ball filled with helium will travel further on average than a ball lled standard air. The le helium.csv also contains the information on the contents of each ball in thefill column Assign standard air as population 1 and helium as population 2. 1. Which inference procedure is appropriate to test if a helium lled ball will travel further on average than a ball filled with standard air? Explain. What are the appropriate hypotheses for this test? Conduct the appropriate test. Is the conclusion made from the test in part 3. reliable? Explain. .U'PWN Construct a 95% confidence interval to estimate the difference in the average kicking distance of standard air and heliumfilled footballs. OD . Does the interval found in part 5. confirm the conclusion made in part 3.? 7. What is the margin of error of the interval found in part 5