The Test Scores on a 100-Point Test Were Recorded for 20

question 74

Short Answer

The test scores on a 100-point test were recorded for 20 students: Can you reasonably assume that these test scores have been selected from a normal population? Use a stem and leaf plot to justify your answer. Calculate the mean and standard deviation of the scores. If these students can be considered a random sample from the population of all students, find a 95% confidence interval for the average test score in the population.
These test scores ______________ been selected from a normal population.
Mean = ______________
Standard Deviation = ______________
What is 95% confidence interval? (CI)
CI = ______________ Enter (n1, n2)

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Definitions:

Zygomatic

Pertaining to the cheekbone or zygoma, which is a bone that forms part of the orbit of the eye and the cheek.

Temporal

Pertaining to the temporal bone of the skull, near the temples, and involved in hearing and balance.

Parietal

Relating to or attached to the wall of a cavity or body, such as the parietal bones of the skull or the parietal lobe of the brain.

Sphenoid

A complex bone located at the base of the skull between the frontal and temporal bones, contributing to the structure of the eye socket and the cranial floor.