CompetencyDemonstrate the use of the normal distribution, the standard normal distribution, and the central limit theorem for calculating areas under the normal curve and exploring these concepts in real life applications.ScenarioFrank has only had a brief introduction to statistics when he was in high school 12 years ago, and that did not cover inferential statistics. He is not confident in his ability to answer some of the problems posed in the course.As Frank's tutor, you need to provide Frank with guidance and instruction on a spreadsheet he has partially filled out. Your job is to help him understand and comprehend the material. You should not simply be providing him with an answer as this will not help when it comes time to take the test. Instead, you will be providing a step-by-step breakdown of the problems including an explanation on why you did each step and using proper terminology.What to SubmitTo complete this assignment, you must first download the spreadsheet, and then complete it by including the following items:1. Incorrect AnswersCorrect any wrong answers. You must also explain the error performed in the problem in your own words.2. Partially Finished WorkComplete any partially completed work. Make sure to provide step-by-step instructions including explanations.3. Blank ProblemsShow how to complete any blank questions by providing step-by-step instructions including explanations.Your step-by-step breakdown of the problems, including explanations and calculations performed should be present within the Excel workbook provided.

You are analyzing the cross-store sales of a grocery store chain. As part of your analysis, you compute two measures of central tendency—mean and median. The mean sales are $358.4 million, and the median sales are $163.1 million (per store). To quantify the average sales per store, evaluate which of the two measures would you use and why. Support your discussion with relevant examples, research, and rationale.The final paragraph (three or four sentences) of your initial post should summarize the one or two key points that you are making in your initial response.Your posting should be the equivalent of 1 to 2 single-spaced pages (500–1000 words) in length.