A Simple Random Sample of 60 Households in City 1

question 46

Multiple Choice

A simple random sample of 60 households in City 1 is taken.In the sample,there are 45 households that decorate their houses with lights for the holidays.A simple random sample of 50 households is also taken from the neighboring City 2.In the sample,there are 40 households that decorate their houses.We wish to estimate the difference in proportions of households that decorate their houses with lights for the holidays,with a 95% confidence interval.What is the standard error of the difference in sample proportions?

• A)0.040
• B)0.0795
• C)0.0802
• D)0.1125

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Definitions:

Trans-Acting

Referring to genetic regulatory elements or factors, such as transcription factors, that can regulate the expression of genes located elsewhere on the DNA molecule.

Regulatory Elements

Genetic sequences that control the activity of genes, including promoters, enhancers, silencers, and insulators that can regulate gene expression.

Transcription Factors

Proteins that bind to specific DNA sequences, controlling the transfer of genetic information from DNA to mRNA.

Somatic Mutation

A somatic mutation is a mutation that affects cells in the body (“soma”) of an organism. These mutations affect all the daughter cells produced by the affected cell and can affect the phenotype of the individual. In animals, somatic mutations are not passed down to offspring. In plants, somatic mutations can be passed down during vegetative reproduction.