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Name _____________________________
Date ___________________
Statistics
Complete.

1.   Hunter used the method of Archimedes to determine the volume of some twigs he was using in an experiment. The class was comparing the densities of different kinds of wood. He measured the volume of 8 twigs and found the average volume was 3.2 ml. Before he completed the calculations, he discarded one measurement because he thought the twig was the wrong species. After discarding the twig he obtained, a new average volume of 2.4 ml. What must have been the volume of the twig he discarded?

2.   Kyle studied some slides that showed onion cells undergoing mitosis. He found 18 cells in metaphase, 14 cells in anaphase, 24 cells in telophase, and 13 cells in prophase. If there were a total of 108 cells on the slide, what is the probability that any particular cell will be found in some stage of mitosis?

3.   * This is a pre-made sheet.
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4.   Mr. Bloop live-trapped mice near his barn for several nights in a row. They were eating the chicken feed stored there. On 4 consecutive nights, he trapped 10, 11, 8, and 4 mice. What was the average number of mice caught per night? Round your answer to the nearest whole number.


 


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