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(All Steps) Four machines manufacture cylindrical steel pins. The pins are subject to a diameter specification. A pin may meet the specification, or it

Question: Four machines manufacture cylindrical steel pins. The pins are subject to a diameter specification. A pin may meet the specification, or it may be too thin or too thick. Pins are randomly sampled from each machine, and the number of pins in each category is counted. The following table presents the results. Is the proportion of pins that are too thin, OK, or too thick the same for all machines?

Too Thin OK Too Thick
Machine 1 10 102 8
Machine 2 34 161 5
Machine 3 12 79 9
Machine 4 10 60 10

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