Do Homework - Section 2.4 Homework - Google Chrome - X mathxl.com/Student/PlayerHomework.aspx?homeworkld=602992170&questionld=7&flushed=false&cld=6586730¢erwin=yes Mth 104-04 TTI Nechama Aisenstark & | 07/29/21 1:17 PM Homework: Section 2.4 Homework O Question 7 Score: 0 of 1 point Save Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 66 miles per hour, with a standard deviation of 4 miles per hour. Estimate the percent of vehicles whose speeds are between 54 miles per hour and 78 miles per hour. (Assume the data set has a bell-shaped distribution.) . . .. . Approximately |% of vehicles travel between 54 miles per hour and 78 miles per hour. Enter your answer in the answer box and then click Check Answer. Help Me Solve This View an Example Get More Help - Clear All Check Answer Type here to search 78.F Cloudy D ( () ENG 1:17 PM 7/29/2021Do Homework - Section 2.4 Homework - Google Chrome - X mathxl.com/Student/PlayerHomework.aspx?homeworkld=602992170&questionld=7&flushed=false&cld=6586730¢erwin=yes Mth 104-04 TTI Nechama Aisenstark & | 07/29/21 1:25 PM Homework: Section 2.4 Homework O Part 1 of 3 Question 10 Score: 0 of 1 point Save The coefficient of variation CV describes the standard deviation as a percent of the mean. Because it has no units, you can use the coefficient of variation to compare data with different units. Find the coefficient of variation for each sample data set. What can you conclude? CV = - Standard deviation . 100% Mean - X Click the icon to view the data sets. Data Table CVheights = % (Round to the nearest tenth as needed.) Heights | Weights 70 189 72 223 68 213 79 181 76 182 71 170 67 230 66 199 74 184 65 195 66 202 72 186 Enter your answer in the answer box and then click Check Answer. Help Me Solve This View an Example Get More Help - Print Done Check Answer 1:25 PM Type here to search 78.F Cloudy DO ( ()) ENG 7/29/2021Hub Daemen X P Do Homework - Section 2.4 Homework - Google Chrome - X X C mathxl.com/Student/PlayerHomework.aspx?homeworkld=602992170&questionld=11&flushed=false&cld=6586730¢erwin=yes N . . . TICIP Mth 104-04 TTI Nechama Aisenstark & | 07/29/212:52 PM MyLab Statis Homework: Section 2.4 Part 1 of 7 Question 11 > Score: 0 of 1 point Save Homework My Courses Sample annual salaries (in thousands of dollars) for employees at a company are listed. Course Home elp 44 34 46 62 38 38 44 34 46 33 62 44 42 Assignments (a) Find the sample mean and sample standard deviation. (b) Each employee in the sample is given a $4000 raise. Find the sample mean and sample standard deviation for the revised data set. (c) Each employee in the sample takes a pay cut of $4000 from their original salary. Find the sample mean and the sample standard deviation for the revised data set. Study Plan (d) What can you conclude from the results of (a), (b), and (c)? Gradebook . . . . . (a) The sample mean is x = thousand dollars. StatCrunch (Round to one decimal place as needed.) eText Chapter Contents Accessible Resourc Skills for Success Enter your answer in the answer box and then click Check Answer. Tools for Success Multimedia Library Help Me Solve This View an Example Get More Help - Clear All Check Answer Purchase Options 77.F Cloudy D (( ()) ENG 2:52 PM Type here to search 7/29/2021Do Homework - Section 2.4 Homework - Google Chrome - X mathxl.com/Student/PlayerHomework.aspx?homeworkld=602992170&questionld=9&flushed=true&cld=6586730¢erwin=yes Mth 104-04 TTI Nechama Aisenstark & | 07/29/212:53 PM Homework: Section 2.4 Homework O Part 1 of 3 Question 9 Score: 0 of 1 point Save The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the pie chart. First construct the frequency distribution. - X Class Frequency, f Weekly Study Hours 0-4 5-9 10-14 1 0-4 hours (3 people) 5-9 hours (12 people) 15-19 10-14 hours (21 people) 20-24 15-19 hours (18 people) 20-24 hours (15 people) 25-29 00 25-29 hours (12 people) 30+ 30+ hours (7 people) Print Done Enter your answer in the edit fields and then click Check Answer. Help Me Solve This View an Example Get More Help - Clear All Check Answer Type here to search N 77.F Cloudy ~ DO " ()) ENG 2:53 PM 7/29/2021Do Homework - Section 2.5 Homework - Google Chrome - X mathxl.com/Student/PlayerHomework.aspx?homeworkld=602992171&questionld=5&flushed=false&cld=6586730¢erwin=yes Mth 104-04 TTI Nechama Aisenstark & | 07/30/21 3:18 PM Homework: Section 2.5 Homework O Part 1 of 3 Question 5 Score: 0 of 1 point Save Use the accompanying data set to complete the following actions. a. Find the quartiles. b. Find the interquartile range. c. Identify any outliers 41 52 36 43 40 38 39 47 43 39 34 54 43 36 15 51 39 51 30 30 . . ... a. Find the quartiles. The first quartile, Q1, is. The second quartile, Q2, is The third quartile, Q3, is. (Type integers or decimals.) Enter your answer in the edit fields and then click Check Answer. Help Me Solve This View an Example Get More Help - Clear All Check Answer Type here to search 81.F Partly sunny ~ 91 } (" () 3:18 PM 7/30/2021Do Homework - Section 2.5 Homework - Google Chrome - X mathxl.com/Student/PlayerHomework.aspx?homeworkld=602992171&questionld=9&flushed=true&cld=6586730¢erwin=yes Mth 104-04 TTI Nechama Aisenstark & | 07/30/21 3:18 PM Homework: Section 2.5 Homework O Part 1 of 2 Question 9 Score: 0 of 1 point Save The data show the number of vacation days used by a sample of 20 employees in a recent year. Use technology to answer parts (a) and (b). a. Find the data set's first, second, and third quartiles. b. Draw a box-and-whisker plot that represents the data set. 6 3 9 6 1 3 4 4 6 6 6 2 5 10 9 0 9 8 8 7 5 . . . . . a. Find the three quartiles. Q1 Q2 = Q3 = (Type integers or decimals. Do not round.) Enter your answer in the edit fields and then click Check Answer. Help Me Solve This View an Example Get More Help - Clear All Check Answer Type here to search 81.F Partly sunny ~ 91 } (" () 3:18 PM 7/30/2021