3. When you are finished answering the 20 equally-weighted questions below, submit your file to me through Blackboard's assignment facili by 11:59 pm, Sunday, November 13, 2011. QUESTIONS: The data contained in sheet 'Data' has been drawn from a normal distribution with mean mu and variance sigma^2; i.e., Y - N(mu,sigma*2) where mu = the population mean of Y, sigma = the population standard deviation of Y, and sigma^2 = the population variance of Y. In this problem set, we do NOT know the value of sigma. Therefore, we must estimate its value. Suppose that our null hypothesis is given by HO: mu = 6 Compute the sample mean of Y from our data contained in sheet 'Data": 7.5947256418 (01)