For the Following Frequency Distribution of Exam Scores,how Many Students

question 32

Multiple Choice

For the following frequency distribution of exam scores,how many students had scores lower than X = 80?? $$\begin{array} { l l } \mathrm { X } & \mathrm { f } \\\hline 90 - 94 & 3 \\85 - 89 & 4 \\80 - 84 & 5 \\75 - 79 & 2 \\70 - 74 & 1 \\\hline\end{array}$$

• A)?2
• B)?3
• C)?7
• D)?8

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Research papers written by students over an academic term, accounting for a large part of a grade.

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The economic practice where individuals or entities focus on a narrow area of expertise to increase efficiency and trade with others for different goods or services.

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