A statistics course at a large university is taught in each semester. A student has noticed that the students in semester 1 and semester 2 are enrolled in different degrees. To investigate, the student takes a random sample of 25 students from semester 1 and 25 students from semester 2 and records their final marks (%) provided in the table below. Excel was used to generate descriptive statistics on each sample.
Assume that student final marks are normally distributed in each semester. 
Estimate and interpret a 95% confidence interval for the population average final mark for semester 2 students.
Definitions:
Helpers
Individuals within a social structure who assist others, particularly in the context of rearing offspring or providing support within the group.
Evolution of Nervous Systems
The process through which the nervous system has developed and diversified among different organisms over time.
Sponges
Simple, multicellular organisms that live attached to solid surfaces underwater, filtering nutrients and oxygen from the water through their porous bodies.
Ctenophores
Also known as comb jellies, are marine invertebrates distinguished by their eight rows of ciliary plates used for locomotion.
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