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This is stat question and the data show as below This is stat question and the data show as below Flows in the Credit River in Mississauga are given in the file credit.MPJ or in the file credit.xlsx. C1 C2 Feb C3 C4 C5 April Lu 36 260 95 72 327 184 154 58 178 205 335 101 62 294 250 92 87 64 87 224 69 129 95 238 127 163 239 124 17 18 19 20 21 61 30 40 19 13 23 21 59 104 47 23 24 25 26 27 28 29 30 31 32 37 105 38 59 100 32 18 31 39 26 19 27 38 26 42 87 34 35 36 37 38 39 40 121 65 49 85 69 36 50 37 59 48 42 48 36 48 43 45 46

thin one standard deviation or the mean 「er mich of the months, does it agre approximately ith the value trom the empirical rule of 66% 1 「or each of the three months April February and AuO st calculate the num be of observations that lie April August Februry

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Answer #1

Let's enter data in excel and do the calculations:

D40 27 38 26 34 49 68 48 34 48 36 48 24 23 121 65 64 87 224 69 129 95 238 127 163 239 124 19 20 21 23 85 69 36 50 37 59 24 25 26 27 28 29 30 155.3214 57.25 34.42857 Averages of each columns 31 85.46764 26.87222 14.9366 Population standard deviations of each columns 32 69.85378 30.37778 19.49197 Liower 1 sigma limits 33 240.7891 84.12222 49.36517 Upper 1 sigma limits 34 35 64.28571 60.71429 36 37 Since 75% is greater than 66% so correct choice is Aug. 21 Total number of observations lies between lower and upper limits 75 Total % of the data lies between Lower and Upper limits. 18 17 38

The formulae used on the above excel-sheet are as follows:

19 64 20 87 21 224 22 69 23 129 24 95 25 238 26 127 27 163 28 239 29 124 30 FAVERAGE(A2:A29) FAVERAGE(B2:B29) FAVERAGE(C2:C29) Averages of each col 31 STDEV.P(A2:A29) STDEV.P(B2:B29) STDEV.P(C2:C29) Population standard 32 EA30-A31 33 EA30+A31 34 18 35 (18/28)*100 36 37 Since 75% is greater i 38 24 23 121 65 85 69 36 50 37 59 27 38 26 34 49 68 48 34 48 36 48 B30-B31 B30+B31 17 (1700/28) -C30-C31 -C30+C31 21 -2100/28 Liower 1 sigma limits Upper 1 sigma limits Total number of obs Total % of the data li

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