Wilco is a manufacturer in a mature cyclical industry. During the most recent industry cycle, its net income averaged Rs30 million per year with a standard deviation of Rs10 million (n=6 observations). Management claims that willco's performance during the most recent cycle results from new approaches and that we can dismiss profitability expectations based on its average or normalized earnings of Rs24 million per year in prior cycles. (a) Set the null and alternative hypotheses (b) Assuming that willco's net income is at least approximately normally distributed, identify the appropriate test statistic. (c) Determine whether or not to reject the null hypothesis at the 5% significance level