8:59 K Homework Handout P... O Homework 3 Handout Portion Part I 1. A sample has a bell-shaped distribution with the mean of 78 and standard deviation of 6. Using the empirical rule, a. Find its 68% range. b. Find its usual range. c. What percentage of this sample fall below 90? For questions 2-8. The age of 35 randomly selected drivers at the time of accident is given below: 20 35 42 18 25 20 36 49 24 37 23 24 30 45 38 35 30 37 40 25 28 37 50 47 48 30 32 48 40 45 39 50 40 42 48 2. Find the mode Given the data has a bell-shaped distribution and with a mean of 35.9 and a standard deviation of 9.6, answer questions 3-8 3. Find the 68% interval, according to the empirical rule. 4. Find the usual range, according to the empirical rule. (Conceptual Question) 5. Exploring Standard Deviation Your three friends are trying to limit the number of times they check their social media on their phones, so they all decide to individually record the number of times they check their social media a day for the course of one week (Monday-Sunday). Friend A checked their social media (on their phone) two times a day during the course of the week, while Friend B checked their social media on their phone three times every other day over the course of the week (Monday-Sunday). Friend C checked their social media on their phone 6 times a day for the first four days (Monday-Thursday) of the week, and then they checked their social media on their phone 7 times a day in the last three days of the week (Friday-Sunday). Without using the formula discussed in class, list your three friends in order from least to greatest standard deviation. 000 Dashboard Calendar To Do Notifications Inbox