State whether the investigation in question is an observational study or a designed experiment. Justify your answer in each case. In the article by P. Ridker et al. titled "A Randomized Trial of Low-dose Aspirin in the Primary Prevention of Cardiovascular Disease in Women", the researchers noted that "We randomly assigned 39,876 initially healthy women 45 years of age or older to receive 100 mg of aspirin or placebo on alternate days and then monitored them for 10 years for a first major cardiovascular event (i.e., nonfatal myocardial infarction, nonfatal stroke, or death from cardiovascular causes)."

Question

State whether the investigation in question is an observational study or a designed experiment. Justify your answer in each case. In the article by P. Ridker et al. titled &quot;A Randomized Trial of Low-dose Aspirin in the Primary Prevention of Cardiovascular Disease in Women&quot;, the researchers noted that &quot;We randomly assigned 39,876 initially healthy women 45 years of age or older to receive 100 mg of aspirin or placebo on alternate days and then monitored them for 10 years for a first major cardiovascular event (i.e., nonfatal myocardial infarction, nonfatal stroke, or death from cardiovascular causes).&quot;

rogreenhoxa8 · Accepted Answer

Step 1  It is a designed experiment because the experiment was given controls and treatments then at the end of the experiment, a conclusion could be made. They actively took a part of this treatment, they did not merely observe.

Accepted Answer

This would be ean experiment because that have a contrl group and are studying to find a cure.

State whether the investigation in question is an observational study or a desig

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