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One quick multiple choice statistics question?
2. An experimenter wishes to test whether or not two types of fish food (a standard fish food and a new product) work equally well at producing fish of equal weight after a 2-month feeding program. The experimenter has 2 identical fish tanks (1 & 2) to put fish in and is considering how to assign the 40 tagged fish to the tanks. To properly assign the fish, one step would be to:
A) put all the odd tagged numbered fish in one tank, the even in the other, and give the standard food type to the odd numbered ones
B) obtain pairs of fish whose weights are virtually equal at the start of the experiment and randomly assign one to the group tank 1, the other to tank 2 with the feed assigned at random to the tanks.
C) to proceed as in as in (b), but put the heavier of the pair into tank 2.
D) assign the fish at random to the two tanks and give the standard feed to tank 1.
E) not to proceed as in (b) because using the initial weight in (b) is a non-random process.Use the initial length of the fish instead.
2 Answers
- cidyahLv 71 decade agoFavorite Answer
The experimenter wants to test whether the two types of food work equally well.
obtain pairs of fish whose weights are virtually equal at the start of the experiment and randomly assign one to the group tank 1, the other to tank 2 with the feed assigned at random to the tanks.
After the experiment is completed, he wants to compare the average weights of tank-1 fish versus average weight of tank-2 fish.
- Anonymous4 years ago
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