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A scientist is interested in researching which plant fertilizer will yield the largest roses. Which study design would be best suited to this research question?(1 point)
Responses
an experimental study using different roses as treatment
an experimental study using different roses as treatment
an experimental study using different fertilizers as treatment
an experimental study using different fertilizers as treatment
a survey asking local gardeners which fertilizer they prefer
a survey asking local gardeners which fertilizer they prefer
an observational study that measures rose growth over time
an observational study that measures rose growth over time
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an experimental study using different fertilizers as treatment
Reason: The researcher should manipulate the fertilizer (treatment), randomize/standardize conditions, and compare rose size — allowing causal inference about which fertilizer produces the largest roses.
Reason: The researcher should manipulate the fertilizer (treatment), randomize/standardize conditions, and compare rose size — allowing causal inference about which fertilizer produces the largest roses.
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