See attached. Quantitative analysis question. Due tomorrow at 5 pm. Any help is appreciated

In the banking industry, the return on equity ratio or percentage is used to evaluate the nancial performance of a bank. Such information is extremely valuable to investors. Calculate the return on equity (ROE) for a sample of 20 banks for the year before the Sarbanes-Oxley Act was enacted. For the same sample of banks, calculate the ROE for the year following the enactment of the Sarbanes-Oxley Act. Later, answer the following questions: I After the enactment of the Sarbanes-Oxley Act, was the average bank's ROE lower than it was before the act? If so, why do you think that was the case? i What is the null hypothesis for this hypothesis test? ' What is the alternative hypothesis for this hypothesis test? I Choose at least three different signicant levels to conduct the hypothesis test. Is it possible that a Type I error occurred with the hypothesis test? Why or why not? Is it possible that a Type II error occurred? Why or why not