Question: A postal service is considering using a new system to read postcodes. To check how accurately the new system reads postcodes, the same 500 letters

A postal service is considering using a new system to read postcodes. To check how accurately the new system reads postcodes, the same 500 letters are placed through the machine 36 times. The frequency table summarizes the number of errors.

Class	Frequency
(0, 12]	11
(12, 24]	15
(24, 36]	5
(36, 48]	2
(48, 60]	2
(60, 72]	1
Total	36

How many errors were less than or equal to 60?

Select one:

97.24%

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