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16 January, 14:58

The student is conducting a nutrition experiment using lab rats. One group (control group) is fed a normal diet, while the other group (experimental group) is fed a diet high in protein. There were 30 rats total used in the experiment. At the end of the experiment, the average mass (weight) of a rat in the control group was 60.4 g while the average mass (weight) of a rat in the experimental group was 0.0689 kg. What is the average difference in weight between the two groups in grams?

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  1. 16 January, 16:14
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    8.5 g

    Explanation:

    Average weight of rats in the control group = 60.4 g

    Average weight of rats in the experimental group = 0.0689 kg

    0.0689 kg = 0.0689 x 1000 g

    = 68.9 g

    Average difference in weight between control and experimental group = Average weight of rats in experimental group - average weight of rats in control group

    = (68.9 - 60.4) g

    = 8.5 g

    Therefore, the average difference in weight between the two groups in grams is 8.5.
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