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Firefox File Edit View History Bookmarks Tools Window Help (0-0) : · 4)) 2396C4) Wed 3:22 PM Allis Adimey a E Exam 01 * Survey: Exam 01 Online Pro x https://www.webassign.net/web/Student/Assignment-Responses/last?dep 17258485 c Search (6) Now you have FULLY completed Exam 01 Online Proctor Now complete the quiz here and then follow the instructions. You have 75 minutes from when you start the quiz. Students with SAS approval will get twice the time. There are 12 questions. I RECOMMEND YOU TAKE THIS EXAM ON CAMPUS. IT IS YOUR RESPONSIBILITY TO ENSURE YOU HAVE CONTINUOUS INTERNET AND ELECTRICITY. 4. Question Details DevoreStat9 1.E.051 My Notes Ask Your Teacher An article reported the following data on oxidation-induction time (min) for various commercial oils 85 103 130 160 180 195 131 145 211 105 145 54 152 135 87 9994 119 129 (a) Calculate the sample variance and standard deviation. (Round your answers to three decimal places.) min2 min (b) If the observations were reexpressed in hours, what would be the resulting values of the sample variance and sample standard deviation? Answer without actually performing the reexpression. (Round your answer to three decimal places.) hr2 hr Submit Answer Save Progress Home My Assignments Extension Request WebAssign 401997-2017 Advanced Instructional Systems, Inc. All rights reserved

Explanation / Answer

The statistical software output for this problem is:

Summary statistics:

Hence,

a) s2 = 1272.895

s = 35.678

b) Variance will be divided by 3600 and Standard deviation will be divided by 60. So,

s2 = 0.354 hr2

s = 0.595 hr

Column Variance Std. dev. Data 1272.8947 35.67765

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