The Mean Grade of the 30 Students in Section 1

question 111

Multiple Choice

The mean grade of the 30 students in Section 1 is 80. The mean grade of the 40 students in Section 2 is 85. The mean grade of the 30 students in Section 3 is 80. What is the mean grade of all students from the three sections combined?

• A) 80.00
• B) 81.67
• C) 82.00
• D) 85.00

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Definitions:

Spinal Block

A form of regional anesthesia involving the injection of a local anesthetic into the cerebrospinal fluid surrounding the spinal cord to induce numbness in the lower part of the body.

Spinal Canal

The hollow space in the spine through which the spinal cord passes, protected by the vertebral column.

Local Anesthetic

Reduction of pain in an area of the body.

First Stage

The initial phase or period in a process, development, or series of events.