#455 Word Processor Repairs This frequency

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Word Processor Repairs This frequency distribution represents the data obtained from a sample of word processor repairers. The values are the days between service calls on 80 machines.

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Free Chegg Answer

1. Step 1 of 2

   Boundaries	Mid point X m	Frequency (f)
   25.5 – 28.5 28.5 – 31.5 31.5 – 34.5 34.5 – 37.5 37.5 – 40.5 40.5 – 43.5	27 30 33 36 39 42	5 9 32 20 12 2	135 270 1056 720 468 84	3645 8100 34848 25920 18252 3528
   		= 80	= 2733	=94293

2. Step 2 of 2

   Variance 

   

   

   =11.7327

   Standard deviation s