Question: The data below are 60 records for the time between failures [TBF], in minutes, occurred in a certain plant. Group these data into seven

The data below are 60 records for the time between failures [TBF], in minutes, occurred in a certain plant. Group these data into seven equal-width classes. Then construct and display the frequency and percentage frequency distributions. 20 23 28 8 25 32 18 28 21 11 26 19 24 31 13 30 16 7. 33 23 29 13 22 35 23 10 39 26 24 18 25 27 24 33 17 12 22 26 20 38 17 31 15 28 33 25 12 24 30 14 23 25 8 26 22 19 29 24 21

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