A British Columbia Study Found That, Compared to 1998, the Percentage

question 29

Multiple Choice

A British Columbia study found that, compared to 1998, the percentage of sexually active youth who used an effective contraceptive method at last intercourse in 2003

• A)decreased from 86.6% to 71.1%.
• B)decreased from 67.5% to 56.7%.
• C)increased from 53.2% to 68.4%.
• D)increased from 77.4% to 86.9%.

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Definitions:

Normal Population

A statistical population that follows a normal distribution, where the data tends to cluster around a mean value.

Population Mean

The average value of a set of characteristics within a specified entire population.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how spread out the data points are from the mean.

T-distribution

A probability distribution that is used to estimate population parameters when the sample size is small and/or when the population variance is unknown.