Use the Following Information to Answer the Question

question 44

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 was taken and the mean finishing time was found to be
1.59 hours with a standard deviation of 0.30 hours.
-What is the standard error for the mean finish time of 30 randomly selected participants? Round to the nearest thousandth.

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

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Definitions:

Psychological Research

Psychological research involves the scientific study of mental functions and behaviors, employing various methodologies to understand psychological phenomena.

Correlation Coefficient

A statistical measure that indicates the extent to which two variables fluctuate together, signaling the strength and direction of their relationship.

Significance Level

A statistical measure that indicates the probability of a particular result occurring by chance, commonly used in hypothesis testing to determine if results are statistically significant.

Internal Validity

The extent to which a research study can demonstrate a causal relationship between variables, free from the influence of external factors.