Week 2 Test - Attempt 2

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School

American Military University *

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Course

302

Subject

Statistics

Date

Jan 9, 2024

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pdf

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20

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Week 2 Test - Results X Attempt 2 of 2 Written Nov 20, 2023 12:53 AM - Nov 20, 2023 1:10 AM Attempt Score 16 /20-80 % Overall Grade (Highest Attempt) 16 /20-80 % Question 1 1/ 1 point The following data are the distances between 21 retail stores and a large distribution center. The distances are in miles. See Attached Excel for Data. retail store data.xlsx Find the standard deviation and round to the nearest tenth. Use the Excel function to find the Sample SD. () 35.5
\/<\> 36.3 345 w Hide question 1 feedback use =STEDV.S function in Excel. Question 2 1/ 1 point An instructor wants to compare spread (variation) of final grades of students in her online class and face- to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. final grade data.xlsx Use the Excel function to find the Sample SD. The standard deviation of final grades for the online class is 7.83 v Use the information to respond to the following question: (round to 2 decimal places) w Hide question 2 feedback use =STEDV.S function in Excel. Question 3 1/ 1 point
The population FTES for 2005-2006 through 2010-2011 was given in an updated report. The data are reported here. See Attached Excel for Data. FTES data.xlsx Calculate the Sample Variance. Round to two decimal places. Use the Excel function to find the Sample Variance. Variance: 27901.07 w Hide question 3 feedback use =VAR.S() function in Excel. Question 4 0/ 1 point Santa Clara County, CA, has approximately 27,873 Japanese-Americans. Their ages are as follows : Age Group|Percent of Community 0-17 18.9 18-24 8.0
25-34 22.8 35-44 15.0 45-54 13.1 55-64 11.9 65+ 10.3 Which box plot most resembles the information above? : | \ : L J 1 Ll L 1 I " Ll J 0 24 25 54 100 ; 3 | : l : | 1 | 1 1 1 ) L ' Ll J 0 24 34 53 100
—— - B R — | | ' -~ t % t — 0 18 34 45 =100 Question 5 1/ 1 point A survey was conducted of 130 purchasers of new BMW 3 series cars, 130 purchasers of new BMW 5 series cars, and 130 purchasers of new BMW 7 series cars. In it, people were asked the age they were when they purchased their car. The following box plots display the results. Which group is most likely to have an outlier? " BMW 3 series —] | : | BMW 5 series : | I BMW 7 series -—-a- - — - i A —_ —.— - —— —— —— —- . — . ) None of these groups v( ) BMW 3 Series
> BMW 7 Series () BMW 5 Series Question 6 1/ 1 point Suppose one hundred eleven people who shopped in a special t-shirt store were asked the number of t- shirts they own costing more than $19 each. 40/111 - 39/111 30/111 < (125/m 23/111] 1 1711100000 10/111 - 5/111 | | 2/111 0 —L P S ... 1 2 3 4 5 6 7 Number of T-shirts costing more than $19 each Relative frequency N Q 1 The percentage of all people who own at most three t-shirts costing more than $19 each is approximately: \/<> 40.5% ) 59% \> 20.7% ) Cannot be determined
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