Problem 1: A random sample of 49 Walmart customers participated in a survey about the money, they spend on pre-Thanksgiving shopping. Their answers formed a distribution X ~ N($92, $8). - Identify the mean and the standard deviation for the sample. - Follow the steps from the lecture notes and homework to construct the 88% confidence interval for the population mean using a, z-score and EBM. - Write the conclusion using complete sentences. -Use the calculator to construct the confidence interval for the population mean, if the confidence level will be 92%, and all other values stay the same. -Use the formula n = to find the minimum number of participants, if you want to be 95% confident EBM that the estimated sample mean is within two dollars of the true population mean. The sample follows the same distribution X ~ N($92, $8).