iPad 4:17 PM * 77% MyMathLab Homework STAT 130 - Spring 2018-MWF 10AM Kria Alwar
ID: 3041411 • Letter: I
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iPad 4:17 PM * 77% MyMathLab Homework STAT 130 - Spring 2018-MWF 10AM Kria Alward & I 2/6/18 4:17 PM Homework: HW #3-Chapter 3-Variation and Position Score: 0 of 1 pt 3.3.24 Save 8 of 14 (11 complete) HW Score: 78.57%, 11 of 14 pts Question Help Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.5 6.6 6.7 6.8 7.2 7.2 7.4 7.7 7.8 7.8 Bank B (individual lines): 4.3 5.4 5.8 6.1 6.7 7.8 7.8 8.5 9.3 9.7 The coefficient of variation for the waiting times at Bank A is Round to one decimal place as needed.) %. Enter your answer in the answer box and then click Check Answer.Explanation / Answer
3.3.24) here as cefficient of variation =(std deviation/mean)*100 =(0.501/7.170)*!00 =7.0%
3.4.19)as 27 is 6th value; therefore percenitle =(6/(n+!))*100 =(6/37)*100 =16 th percentile
3.4.21) 9oth percentile =(n+!)*p th value=(36+1)*0.9 value=33.3 th value =76
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