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Mean of 20 observations is 17. if 20 is replaced by 40 in observation. find the new mean |
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Answer» Answer: 18 Step-by-step EXPLANATION: mean = sum of observations/ total no. of observations x = 17 × 20 x = 340 Thus, sum of observations = 340 when 20 is REPLACED by 40 the sum of observations= 340-20+40=360 new mean = 360/20 = 18 HOPE THIS WILL HELP YOU! |
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