SCENARIO 12-18
the Director of Transportation of a Large Company $\chi$

question 222

Multiple Choice

SCENARIO 12-18
The director of transportation of a large company is interested in the usage of the company's van pool program.She surveyed 129 of her employees on the usage of the program before and after a campaign to convince her employees to use the service and obtained the following:
She will use this information to perform test using a level of significance of 0.05.
-Referring to Scenario 12-18,the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same.Which test should she use?

• A)\(\chi\)² -test for difference in proportions
• B)Z-test for difference in proportions
• C)McNemar test for difference in proportions
• D)Wilcoxon rank sum test

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Definitions:

mRNA Stability

The propensity of messenger RNA molecules to remain intact and usable for protein synthesis within a cell.

DNA

DNA, the molecule responsible for carrying genetic information critical for the growth, development, functioning, and reproduction of all recognized living organisms and numerous viruses.

Codon

A sequence of three nucleotides in mRNA that specifies a particular amino acid or a start/stop signal in protein synthesis.

Nucleotides

The basic building blocks of DNA and RNA, composed of a sugar, a phosphate, and a nitrogenous base.