Use the Following Information to Answer the Question

question 29

Multiple Choice

Use the following information to answer the question. A sprint duathlon consists of a 5 km run, a 20 km bike ride, followed by another 5 km run. The mean finish time of all participants in a recent large duathlon was 1.67 hours with a standard deviation of 0.25 hours. Suppose a random sample of 30 participants in the 40- 44 age group was taken and the mean finishing time was found to be 1.62 hours with a standard deviation of 0.40 hours.
-What is the standard error for the mean finish time of 30 randomly selected participants in the 40- 44 age group? Round to the nearest thousandth.

• A)0.250
• B)0.046
• C)0.055
• D)0.300

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Definitions:

Difference Threshold

The minimum difference in intensity between two stimuli required for them to be perceived as different 50% of the time.

Selective Attention

The cognitive process of focusing on a particular object or task in the environment while ignoring other irrelevant information.

Sensory Deprivation

The absence of normal levels of sensory stimulation.

Sensory Deprivation

Sensory deprivation is the intentional reduction or removal of stimuli from one or more of the senses, which can lead to unique cognitive and perceptual experiences.