A Recent Study of 15 Shoppers Showed That the Correlation

question 11

Multiple Choice

A recent study of 15 shoppers showed that the correlation between the time spent in the store and the dollars spent was 0.235. Using a significance level equal to 0.05, which of the following is the appropriate null hypothesis to test whether the population correlation is zero?

• A) H0 : r = 0.0
• B) H0 : ρ = 0.0
• C) H0 : μ = 0.0
• D) H0 : ρ ≠ 0

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Definitions:

Spirogyra

A genus of filamentous green algae known for its spiral chloroplasts, commonly found in freshwater environments.

Chloroplasts

organelles found in plant cells and some algae that conduct photosynthesis, converting light energy into chemical energy stored in ATP and NADPH.

Spiral

A curve that winds around a fixed center point at a continuously increasing or decreasing distance from the point.

Spirogyra

A genus of filamentous green algae known for its spiral chloroplasts and its role in freshwater ecosystems.