Questions: After giving a test to a group of students, below is the summary of grades by gender. A B C Total --------------- Male 3 9 10 22 Female 20 15 12 47 Total 23 24 22 69 If a student was randomly chosen, find the probability that the student earned a C. Use a reduced fraction answer.

After giving a test to a group of students, below is the summary of grades by gender.

  A  B  C  Total 
---------------
 Male  3  9  10  22 
 Female  20  15  12  47 
 Total  23  24  22  69 

If a student was randomly chosen, find the probability that the student earned a C.
Use a reduced fraction answer.
Transcript text: After giving a test to a group of students, below is the summary of grades by gender. \begin{tabular}{|r|r|r|r|r|} \hline & A & B & C & Total \\ \hline Male & 3 & 9 & 10 & 22 \\ \hline Female & 20 & 15 & 12 & 47 \\ \hline Total & 23 & 24 & 22 & 69 \\ \hline \end{tabular} If a student was randomly chosen, find the probability that the student earned a $C$. Use a reduced fraction answer. $\square$
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Solution

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Solution Steps

Step 1: Calculate P(not A) = 1 - P(A) = 47 / 69 = 0.681

Final Answer: The probability is 0.681

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