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.

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Definitions:

DNA Polymerase

An enzyme that plays a critical role in DNA replication, helping to build new strands of DNA based on the template provided by the original strand.

Mutations

Changes in the DNA sequence of an organism's genome, which can affect genotype and potentially phenotype.

Semiconservative Replication

Describes the process of DNA replication in which one strand of each copy of a DNA molecule is new, and the other is a strand of the original DNA.

S Cell Extract

A solution derived from cells known as 'S cells,' often used in scientific research.