Test Scores for a History Class Had a Mean of 79

question 74

Essay

Test scores for a history class had a mean of 79 with a standard deviation of 4.5. Test scores for a physics class had a mean of 69 with a standard deviation of 3.7. One student earned a 86 on the history test and a 85 on the physics test. Calculate the z-score for each test. On which test did the student perform better?

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Definitions:

Cytosine

A nitrogenous base found in DNA and RNA, pairing with guanine.

DNA Replication

The process by which a cell duplicates its DNA before cell division, ensuring that each new cell receives a complete set of chromosomes.

Phosphate Groups

Chemical groups containing phosphorus and oxygen that play a crucial role in the energy transfer within cells.

Energy

The capacity to do work.