A Course Coordinator at a University Wants to Investigate If

question 52

Essay

A course coordinator at a university wants to investigate if there is a significant difference in the average final mark of students taking the same university subject in semester 1 or semester 2. A random sample of 30 students is taken from semester 1, with the average final mark is found to be 60 and the standard deviation is 5. A random sample of 50 students is taken from semester 2, with the average final mark is 57 and the standard deviation is 4. Assuming that the population variances are equal, is there significant evidence that the population average final mark in this course differs between semester 1 and semester 2. Test at the 5% level of significance.

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Definitions:

Salivary Amylase

An enzyme found in saliva that begins the digestive process by breaking down starches into simpler sugars.

Oligosaccharides

Short chains of monosaccharide units bound together, found in many plants and used in various biological roles.

Emulsify Lipids

The process of breaking down fats and oils into smaller droplets, typically through the action of bile acids in the digestive system, to aid in lipid digestion and absorption.

Hydrochloric Acid

A highly corrosive, strong mineral acid with many industrial uses, but within the stomach, it aids in digestion and kills bacteria.