Question: I need help When given an assignment, Easton will solve problems using the order of operations, with the use of a calculator, with 80% accuracy

I need help

When given an assignment, Easton will solve problems using the order of operations, with the use of a calculator, with 80% accuracy on 2 out of 3 trials.

I need to understand how to calculate or formula on accuracy on by trials.

trial 1-

trial 2

trial 3 add together then divided by 3?

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