Solved by a verified expert :9. The variance of a sample of 121 observations equals 441. The standard deviation of the sample equalsa. 11.b. 21c. 231d.1.9110. When computing the arithmetic mean, the smallest value in the data seta. can never be negative.b. can never be zeroc. can be any valued. can never be less than the mean. You will get a plagiarism-free paper and you can get an originality report upon request. All the personal information is confidential and we have 100% safe
payment methods. We also guarantee good grades 81)The variance of a sample of 121 observations equals441. The standard deviation of the sample equalsA)11.B)21.C)1.91.D)231. 82)When computing the arithmetic mean, the smallestvalue in the data set Get answer to your question and much more 83)What is the sample standard deviation of the followingnumbers? 2, 6, 8, 7, 9 Get answer to your question and much more 84)What is the sample standard deviation of the followingnumbers? 6, 4, 2, 7, 1 Get answer to your question and much more 85)What is the samplevariance of the followingnumbers? 5, 3, 8, 2, 4Version 136 86)What is the sample variance of the followingnumbers? 6, 4, 2, 7, 1 Get answer to your question and much more 87)The ages of all employees at a small convenience storeare 26, 34, 40, and 26. What is variance of ages for thispopulation? Get answer to your question and much more 88)The ages of all employees at a small convenience storeare 38, 26, 42, and 22. What is variance of ages for thispopulation? Get answer to your question and much more 89)The ages of all employees at a small convenience storeare 34, 40, 36, and 32. What is standard deviation of ages forthis population?A)2.96B)4.23C)32.48D)8.75 90)The ages of all employees at a small convenience storeare 38, 26, 42, and 22. What is standard deviation of ages forthis population? Get answer to your question and much more 91)Students in a statistics class answered a quiz questionand the time it took each student to complete it was recorded.The results are summarized in the following frequencydistribution.Length of Time (in minutes)0 up to 22 up to 46 up to 10What is the standarddeviation (in minutes)?2345 Get answer to your question and much more 92)Students in a statistics class answered a quiz questionand the time it took each to complete it was recorded. Theresults are summarized in the following frequencydistribution.Length of Time (in minutes)0 up to 22 up to 46 up to 10What is the mean (inminutes)? Get answer to your question and much more B)4.5C)5.0D)5.5E)6.593)Each person who applies for an assembly job atRobert's Electronics is given a mechanical aptitude test. Onepart of the test involves assembling a plug-in unit based onnumbered instructions. A sample of the length of time it took42 persons to assemble the unit was organized into thefollowing frequency distribution.Length of Time (in minutes)1 up to 44 up to 77 up to 1013 up to 1616 up to 19What is the mean (inminutes)?10 up to 13A)3.89B)11.50C)8.53D)9.14 Answer KeyTest name: Chapter 03 Test Bank1) TRUE2) TRUE3) FALSE4) FALSE5) TRUE6) FALSE7) TRUE8) TRUE9) FALSE10) TRUE11) FALSE12) TRUE13) TRUE14) FALSE15) TRUE16) TRUE17) B18) D19) C 20) A21) A22) B23) C24) A25) A26) C27) D28) D29) D30) B31) B32) C33) C34) B35) B36) C37) C38) B39) B40) AVersion 141 41) A42) D43) D44) B45) B46) A47) B48) D49) D50) A51) C52) A53) D54) B55) C56) C57) D58) C59) D60) A61) CVersion 142 62) A63) D64) C65) C66) A67) C68) E69) D70) A71) D72) D73) D74) A75) B76) B77) C78) C79) C80) C81) B82) DVersion 143 83) A84) A85) C86) C87) C88) C89) A90) A91) A92) C93) DVersion 144 End of preview. Want to read all 44 pages? Upload your study docs or become a Course Hero member to access this document |
The variance of a sample of 121 observations equals 441 the standard deviation of the sample equals
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