In Testing the Difference Between Two Means from Two Normally

question 12

Multiple Choice

In testing the difference between two means from two normally distributed independent populations,the distribution of the difference in sample means will be:

• A)Normally distributed only if sample sizes are equal.
• B)Normally distributed only if both population standard deviations are known.
• C)Normally distributed.
• D)Normally distributed if both sample sizes are very large.
• E)Normally distributed only if both population variances are equal.

---

Definitions:

Achiral

A term describing an object or molecule that is superposable on its mirror image; not chiral.

L-Aspartic Acid

A naturally occurring amino acid found in proteins and important for the biosynthesis of other amino acids and in the citric acid cycle.

Peptide Bonds

The chemical bonds formed between the carboxyl group of one amino acid and the amino group of another, linking them together in a protein or peptide chain.

Amide Linkages

Chemical bonds formed by the reaction between the carbonyl group of an acid and the amino group of an amine, characteristic of polymers like nylon and proteins.