Author Question: A tea manufacturer is trying to decide whether to add peach flavoring or mango flavoring to green ... (Read 150 times)

xroflmao · **on:** Jul 24, 2018

A tea manufacturer is trying to decide whether to add peach flavoring or mango flavoring to green tea for a new product. A study is done by stopping customers at a grocery store and asking them to drink a small cup of tea with each flavoring, then to rate each of the two flavors on a scale from 1 to 10 . The order in which the teas are presented is randomly assigned for each person. What type of study is this?
a. An observational study.
b. A sample survey.
c. A case-control study.
d. A matched-pairs design.

Question 2

A difficult birth may put a baby at greater risk for autism, according to a study that may provide clues to the causes of the devastating neurological disability. The Centers for Disease Control and Prevention said that in a study of 698 Danish children who had the developmental disorder (autism), researchers found a disproportionately high number had been born before the 35th week of pregnancy, had suffered from low birth weights and were in a breech position at birth. What type of study is this?
a. Retrospective
b. Prospective