A Recruitment Agency Provides a Study of the Average Amount

question 9

Multiple Choice

A recruitment agency provides a study of the average amount of time people work in IT companies. Four companies were considered for the study: big old company A, big new company B, small old company C and small new company D. In this study, a company is considered as new if it has been founded less than 20 years ago and considered as old if has been founded more than 50 years; small company has about 200 employees and big company has more than 1,000 employees. Is it correct to conduct an F-test for these four companies? Choose the correct statement.

• A)For new companies, distribution of the amount of time people workthere is not normal because the population is very small.We cannot use F-test.
• B)If you generate the random sample of equal size for each company, then all conditions for applying the F-test will be met.We can use F-test.
• C)For new companies, distribution of the amount of time people work there is limited by the age of the company and therefore certainly has smaller standard deviation.We cannot use F-test.
• D)Big companies will have large samples and therefore the samples will be dependent.We cannot use F-test.

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Definitions:

Ganglion Cells

Neurons located in the retina that receive visual information from photoreceptors and transmit it to the brain.

Opponent-process Theory

A psychological and neurological model that explains how humans perceive colors as the brain processes signals from the eyes in an antagonistic manner.

Bipolar Cell

A type of neuron found in the retina that plays a role in the transmission of visual information from photoreceptors to ganglion cells.

Spontaneous Rate

In neuroscience, it refers to the baseline firing rate of a neuron when not being stimulated.