The Z Value for a 85% Confidence Interval for the Population

question 4

Multiple Choice

The z value for a 85% confidence interval for the population mean with known is:

• A)1.96
• B)2.33
• C)1.44
• D)2.58

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Definitions:

Polygenic Processes

Involving or determined by several different genes, affecting the inheritance and variation of certain traits or disorders.

Heritability

A measure of how much of the variation in a trait within a population is due to genetic differences among individuals in that population.

Twin Studies

Studies of the heritability of a disorder by comparing concordance rates between monozygotic and dizygotic twins.

Identical Twins

Twins resulting from the splitting of a single fertilized egg, sharing the same genetic material and thus being genetically identical.