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Login | UMGC X Chapter 3 Quiz - Averages and V. X VA Chapter 3 Quiz - Averages webassign.net/web/Student/Assignment-Responses/last?dep=30133504 Inbox - kolege246... G Google Ad Grants e... Taxpayer Bill of Rig... Screenshot of the F... Partner be able to come back to the skipped part. Tutorial Exercise Consider sample data with x = 30 and s = 6. (a) Compute the coefficient of variation. (b) Compute a 75% Chebyshev interval around the sample mean. Click here to begin! 2. [-/1 Points] DETAILS BBBASICSTAT8 3.R.014. Professor Cramer determines a final grade baseder 3 Quiz - Averages and Vi X A Chapter 3 Quiz - Averages and V X M 10 games to play all week long - X + webassign.net/web/Student/Assignment-Responses/last?dep=30133504 colege246... G Google Ad Grants e... Taxpayer Bill of Rig... Screenshot of the F... Partner Entry | Roge.. Army NG G1 Portal "Radon: The Problem No One Wants to Face" is the title of an article appearing in Consumer Reports. Radon is a gas emitted from the ground that can collect in houses and buildings. At certain levels it can cause lung cancer. Radon concentrations are measured in picocuries per liter (pCi/L). A radon level of 4 pCi/L is considered "acceptable." Radon levels in a house vary from week to week. In one house, a sample of 8 weeks had the following readings for radon level (in pci/L). 1.9 2.2 5.7 5.5 1.9 8.8 3.9 7.2 LO USE SALT (a) Find the mean, median, and mode. mean median mode (b) Find the sample standard deviation, coefficient of variation, and range. (Round your standard deviation to four decimal places and your coefficient of variation to two decimal places.) S % range (c) Based on the data, would you recommend radon mitigation in this house? Explain. Yes, since the median value is over "acceptable" ranges, although the mean value is not. O No, since the average and median values are both under "acceptable" ranges. Yes, since the average and median values are both over "acceptable" ranges. Yes, since the average value is over "acceptable" ranges, although the median value is not. 3:54 PM 10/7/2022 82. F Sunny LenovoX Chapter 3 Quiz - Averages and V X A Chapter 3 Quiz - Averages and V X M 10 games to play all week long - X + C D webassign.net/web/Student/Assignment-Responses/last?dep=30133504 V M Inbox - kolege246... G Google Ad Grants e... Taxpayer Bill of Rig... Screenshot of the F.. Given the sample data. Partner Entry | Roge. Army NG G1 Portal X: 21 19 15 30 25 (a) Find the range (b) Verify that Ex = 110 and Ex2 = 2,552. Ex = [X2 = (c) Use the results of part (b) and appropriate computation formulas to compute the sample variance s and sample standard deviation s. (Round your answers to two decimal places.) S = (d) Use the defining formulas to compute the sample variance s_and sample standard deviation s. (Round your answers to two decimal places.) 52 = = (e) Suppose the given data comprise the entire population of all x values. Compute the population variance ofand population standard deviation o. (Round your answers to two decimal places.) 52 = 3:55 PM 10/7/2022 Sunny LenovoLogin | UMGC X Chapter 3 Quiz - Averages and V X Chapter 3 Quiz - Averages and V X M 10 games to play all week long webassign.net/web/Student/Assignment-Responses/last?dep-30133504 * + M Inbox - kolege246... G Google Ad Grants e... Taxpayer Bill of Rig... Screenshot of the F... Partner Entry | Roge... Army NG G1 Portal O 40 40 30 30 20 20 10 10 O (d) Discuss the distribution. Does the lower half of the distribution show more data spread than the upper half? The upper half shows slightly more spread. O The lower half shows much more spread. O The lower half shows slightly more spread. The upper half shows much more spread. 82.F OLD -RCC SunnyLogin | UMGC x Chapter 3 Quiz - Averages and V X A Chapter 3 Quiz - Averages and V X M 10 games to play all week long - x + CD webassign.net/web/Student/Assignment-Responses/last?dep=30133504 M Inbox - kolege246... G Google Ad Grants e... Taxpayer Bill of Rig... Screenshot of the F... Partner Entry | Roge. Army NG G1 Portal The following data represent weights in kilograms of maize harvest from a random sample of 72 experimental plots on St. Vincent, an island in the Caribbean (Reference: B. G. F. Springer, Proceedings, Caribbean Food Corps. Soc., Vol. 10, pp. 147-152). 7.8 9.1 9.5 10.0 10.2 10.5 11.1 11.5 11.7 11.8 12.2 12.2 12.5 13.1 13.5 13.7 13.7 14.0 14.4 14.5 14.6 15.2 15.5 16.0 16.0 16.1 16.5 17.2 17.8 18.2 19.0 19.1 19.3 19.8 20.0 20.2 20.3 20.5 20.9 21.1 21.4 21.8 22.0 22.0 22.4 22.5 22.5 22.8 22.8 23.1 23.1 23.2 23.7 23.8 23.8 23.8 23.8 24.0 24.1 24.1 24.5 24.5 24.9 25.1 25.2 25.5 26.1 26.4 26.5 26.7 27.1 29.5 In USE SALT (a) Compute the five-number summary. min Q1 median Q3 max b) Compute the interquartile range. (c) Make a box-and-whisker plot. 3:54 PM 10/7/2022 82.F Sunny LenovoArmy NG G1 Portal [-/1 Points] DETAILS BBBASICSTAT8 3.R.014. MY NOTES ASK YOUR TEACHER Professor Cramer determines a final grade based on attendance, two papers, three major tests, and a final exam. Each of these activities has a total of 100 possible points. However, the activities carry different weights. Attendance is worth 7%, each paper is worth 9%, each test is worth 16%, and the final is worth 27%. (a) What is the average for a student with 89 on attendance, 63 on the first paper, 84 on the second paper, 86 on test 1, 91 on test 2, 98 on test 3, and 78 on the final exam? (Round your answer to one decimal place.) (b) Compute the average for a student with the above scores on the papers, tests, and final exam, but with a score of only 26 on attendance. (Round your answer to one decimal place.)toge... 5. [-/1 Points] DETAILS BBBASICSTAT8 3.R.009. Consider the following. (a) What measures of variation indicate spread about the mean? (Select all that apply.) variance standard deviation O coefficient of variation mean (b) Which graphic display shows the median and data spread about the median? 0 5-number summary O histogram O box-and-whisker plot O frequency chart DETAILS 82. F Sunny1 ' z . 1 1- ; t _ ._ 3% Chapter 3 QUIZ ~ Averages and VA Chapter3 Quiz Averagesla'nd V 'X 9 C 0 webassignhet/web/Student/Assignment-Responses/Iast?dep=30133504 M lnbox - kolege246.., G Google Ad Grants e... & Taxpayer Bill of Rig... 6 Screenshot of the F... @ Partner Entrleoge... 9 Army NG Gi Portal l Look at the two histograms below. Each involves the same number of data. The data are all whole numbers, 5 l to the corresponding midpoint shown on the horizontal axis. Notice that both distributions are symmetric. 0 5 (ii) 5 I g 5'4 0 the height oi' each'ba i 4 E 3 3 2 2 1 1 o '0 45678910 (a) Estimate the mode, median, and mean for each histogram. (i) (ii) model:i: medianl:i:l mean:i:i (b) Which distribution has the larger standard deviation? Why? 0 Distribution (i), because more of the data are farther from the mean. 0 Distribution (ii), because more of the data are farther from the mean. 0 Distribution (i), because more of the data are closer to the mean. 0 Distribution (ii), because more of the data are closer to the mean