The Owner of a Fish Market Has an Assistant Who

question 29

Multiple Choice

The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed,with a mean of 3.2 pounds and a standard deviation of 0.8 pound.If a sample of 25 fish yields a mean of 3.6 pounds,what is the Z-score for this observation?

• A)18.750
• B)2.500
• C)1.875
• D)0.750

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Definitions:

Descriptive Statistics

Descriptive Statistics consist of quantitative analysis techniques that summarize, show, or describe basic features of a dataset, providing simple summaries about the sample and the measures.

Statistically Significant

A statistical judgment indicating that observed data are unlikely to occur by chance, suggesting a meaningful relationship or effect.

p < .05

Represents a statistical measure indicating that the probability of the observed data occurring by chance is less than 5%, commonly used in hypothesis testing to suggest a significant effect or difference.

Correlation

A numerical indicator showing the degree to which two variables move in relation, without suggesting a cause-and-effect relationship.