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Firlakuza [10]
4 years ago
8

Determine whether the given description corresponds to an experiment or observational study.a. A stock analyst selects a stock f

rom a group of twenty for investment by choosing the stock with the greatest earnings per share reported for the last quarter.b. A marketing firm does a survey to find out how many people use a product. Of the one hundred people contacted, fifteen said they use the product.c. A political pollster reports that his candidate has a 10% lead in the polls with 10% undecided.d. A doctor gives a new medication to half of his patients with the flu and a placebo to the other half of his patients with the flu.
Mathematics
1 answer:
ICE Princess25 [194]4 years ago
3 0

Answer:

A: experiment

B: observational study

C: observational study

D: experiment

Step-by-step explanation:

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