Unit 8 Assignment: ScreenTime Project Follow the assignment instructions and review the rubric: Directions: Show all your work. To get full credit for this assignment, you need to show and explain each step of what you computed. Write out each formula you use even though you may have used a statistical calculator or the spreadsheet to perform the operation. Part 1 Suppose the video playback time on the latest iPhone is 18 hours, with a standard deviation of .7 hours. Use this zescore table to calculate the following: What percentage of time will a fully charged iPhone last less than 17 hours? What is the probability a fully charged iPhone will last 20 hours? Part 2 Begin your own statistical analysis project. Step 1: Survey 15 friends and family. Ask them how much screen time they have had for the last 7 days (each day) or the average for the last 7 weeks. Create a table to collect this data or use a Google form (how to find screen time on android and iPhone. (Include the spreadsheet with the assignment) Step 2: Read this article. Sample vs Population Standard Deviation Which will you use for your sample and why? Include this information in your final report. Step 3 Calculate the mean and standard deviation. Write and explain the formula. Use Google Sheet to calculate the standard deviation. Step 4 Using this data and the z-score table what percent ofyoung people spend over 10 hours a day looking at their phones