1. Agricultural scientists seek to test the effects of a new pesticide on corn crops. Half...

1. Agricultural scientists seek to test the effects of a new pesticide on corn crops. Half of the participating farmers are assigned the new pesticide and the other half continue using an alternative pesticide. The crops are compared after two seasons.

2. A cancer study began by surveying male participants between the ages of 35 and 55 at a local hospital about their exercise routing. The health of these men is tracked over 10 years to determine the effects of exercise on lowering the risk of cancer.

3.Researchers studying how exercise affects cholesterol sample 50 people who exercise regularly and 50 who do not. Blood was drawn from each person and serum cholesterol was measured.

are these are observational study or experiment or both or neither

Expert Solution

Answer:

Given that:

1) From the information,observe that an agricultural scientist seek to test the effects of a new pesticide on corn crops

Half of the participants farmers are assigned the new pesticide and the other half continue using an alternative possible

It is experimental study

Since the two farmers are testing their crops with the different pesticides and finds which one is best

2) From the information,observe that a cancer study began by surveying male patients between the ages 35 and 55 at a local hospital about their exercise routine

It is observational study

Since the researcher studies the health of men's who are in aged 35 and 55 and suffering with cancer,after tracking some years or taken them are in his observation finds that the effect of exercise on lowering the risk of cancer

3) From the information,observe that researchers studying how exercise affects cholesterol sample of 50 people who exercise regularly and 50 who do not

It is observational study

orchestra answered 1 year ago

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