A Website Advertises Job Openings on Its Website, but Job

question 60

Multiple Choice

A website advertises job openings on its website, but job seekers have to pay to access the list of job openings. The website recently completed a survey to estimate the number of days it takes to find a new job using its service. It took the last 30 customers an average of 60 days to find a job. Assume the population standard deviation is 10 days. Calculate a 95% confidence interval of the population mean number of days it takes to find a job.

• A) [40.4000, 79.6000]
• B) [55.9085, 64.0915]
• C) [56.4216, 63.5784]
• D) [56.9966, 63.0034]

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Definitions:

REM Sleep

A phase of sleep characterized by rapid eye movements, dreaming, and heightened brain activity.

N1 Sleep

The initial stage of the sleep cycle, characterized by light sleep and the transition from wakefulness into deeper sleep stages.

N2 Sleep

A stage of sleep characterized by sleep spindles and K-complexes, representing a deeper sleep than N1 and precedes the deep sleep stages.

N3 Sleep

The third stage of non-REM sleep, characterized by deep sleep and the presence of delta waves in the brain.