A Large University Is Interested in Learning About the Average $\mu = 20$

question 18

Multiple Choice

A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 238 students and asked each to provide the amount of time they
Spent traveling to campus. This variable, travel time, was then used to create a confidence interval
And to conduct a test of hypothesis, both of which are shown in the printout below. One-Sample Z Test
Null Hypothesis: $\mu = 20$
Alternative Hyp: $\mu > 20$


Cases Included 238

What conclusion can be made from the test of hypothesis conducted in this printout? Begin each answer with, "When testing at $\alpha = 0.01 \ldots$ ...

• A) ...there is sufficient evidence to indicate that the average travel time of all students exceeds 20 minutes.
• B) ...there is insufficient evidence to indicate that the average travel time of all students is equal to 20 minutes.
• C) ...there is insufficient evidence to indicate that the average travel time of all students exceeds 20 minutes.
• D) ... there is sufficient evidence to indicate that the average travel time of all students is equal to 20 minutes.

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Definitions:

PTSD

Post-Traumatic Stress Disorder, a psychiatric disorder that may occur in people who have experienced or witnessed a traumatic event.

Delayed Sleep Phase Type

A circadian rhythm sleep disorder that causes a person's sleep and wake times to be delayed by two or more hours beyond the conventional or socially acceptable bedtime.

Circadian Rhythm Disorder

A disruption or misalignment in an individual's internal clock, affecting natural cycles of waking and sleeping, and potentially leading to various sleep disorders.

Late Sleep Onset

A condition referring to the difficulty in falling asleep at a conventional time, often leading to insufficient sleep and affecting overall health.