answer the questions a,b,c b. Is this an observational or experimental study? 1.

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answer the questions a,b,c

b. Is this an observational or experimental study? 1.36 Biology and Environmental Science The Faber Floral Company in Kankakee, Illinois, claims to have developed a special spray for roses that causes the blossom to last longer than an untreated flower. Fifty long-stemmed roses are obtained and randomly assigned to one of two groups: treated versus untreated. The treated roses are sprayed, and the lifetime of each blossom is carefully recorded s going for visit MagicB key and card inf have in sample obtain recor a. Is this an observational or an experimental study? b. What is the variable of interest? c. Describe a technique to randomly assign each rose to a a. b. C. group

Explanation / Answer

a. Clearly this is an experimental study because we intervene (by spraying one half of the roses) in order to collect the relevant data for the purpose of our study.

b. Variable of interest is Time duration for which the blossom of the roses last.

c. A simple technique to assign each rose to one of the groups is to Toss a fair coin and assign a given rose to "Treated" group is Coin toss results in head, otherwise assign it to "Untreated" group.

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