Use the following information in problems 5 - 7: The diameters of several oak trees were measured in centimeters. The results were 7.1 8.5 10.6 13.6 16.0 18.7 19.8 6.2 20.5 24.3 18.7 19.1 6.1 18.8 5. Find all descriptive measures (mean, range, standard deviation, variance, five-number summary). 6. Does this data set contain any outliers? 7. Would you use this data set to test a hypothesis for the population mean? Explain. [In other words, your answer cannot be just yes or no. You have to give justification}