The Population of Lengths of Aluminum-Coated Steel Sheets Is Normally

question 61

Essay

The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 cm and a standard deviation of 0.2 cm.
-Suppose the standard deviation increases to 0.3 cm.What is the probability that average length of a steel sheet from a sample of 9 units is more than 29.95 cm long?

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Definitions:

Heritability

The proportion of variation in a trait among individuals that can be attributed to genetic variations.

Monozygotic

Pertaining to twins who are genetically identical because they were formed from a single fertilized egg that split into two.

Dizygotic

Refers to twins that are developed from two separate fertilized eggs, also known as fraternal twins, resulting in siblings that are genetically similar but not identical.

Sex-linked Recessive Disorders

Genetic disorders that are carried on the sex chromosomes, typically the X chromosome, and are expressed in the phenotype only when a dominant allele is not present.