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A skating rink attendant monitored the number of injuries at the rink over the past year. He tracked the ages of those injured and the kinds of skates worn during injury. In-line skates Roller skates Age 8 11 10 Age 10 4 9 Age 12 3 16 What is the probability that a randomly selected injured skater was not age 12 and was not wearing roller skates? Simplify any fractions.

Answer :

Given data:

The given table is shown.

The expression for the probability of that a randomly selected injured skater was not age 12 and was not wearing roller skates is,

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