Styles Styles SenEAlvity Editor Pane 7. 10 12 13 14 17 18 4. An experiment is carried out to investigate how well 100 nanoparticles disperse uniformly, when introduced into a container of 900 other...

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Extracted text: Styles Styles SenEAlvity Editor Pane 7. 10 12 13 14 17 18 4. An experiment is carried out to investigate how well 100 nanoparticles disperse uniformly, when introduced into a container of 900 other particles of similar size and shape. After the nanoparticles are added at the top of the container, the researchers wait 10 hours before randomly selecting a sample of 20 particles without replacement from the bottom of the container. *What is the probability that the sample will contain 10 nanoparticles? (You need a. not show your reasoning) b. What assumption did you need to make to answer art (a)? Please restrict your answer to one sentence.