Directions Show all your work To get full credit for this

Last updated: 2/22/2023

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 z score 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 of young people spend over 10 hours a day looking at their phones Step 5 Using the z score table based on your data how much screen time would fall into the top 5 How much would fall into the bottom 5 Do you think the data is the same for all age brackets How could you find out Step 6 BORRID 050121 700 rmal distribution tables write a report based on your data Summarize the above steps and include information about the ages and gende