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What does it mean if someone says that a scale-free network arises from preferential attachment?

In lecture, we discussed one common way that is used to scientifically test if there is something special about the structure of a particular network. How did we go about it?

When discussing research on virality, Prof. Lamberson from UCLA presented research that showed that looking at a post that went viral, there is a high probability that it has been sent by an influencer (p(influencer | viral)) and that this is roughly identical with the probability that a post sent by an influencer will go viral (p(viral | influencer)).

In our last lab in NetLogo, the message1 loading of an agent got deleted by meeting an agent with a stronger opinion in accumulated message2 (modelling something like ‘persuasion’). What code could you use?

We have discussed four possible outcomes of models. Which one was NOT one of them?

One out of every five tablets in Greg’s medication container is broken. If the container has 100 tablets in it, how many tablets are broken? 

Identify whether each statement about the phenomenon is true or false.

If the selling price of a product is $7.99 and the pharmacy cost is $4.05, how much profit in dollars does the pharmacy make on the sale? 

Perform the following calculations with fractions and reduce the answers to their lowest values:1/3 + 1/2

A pharmacy charges $45.49 for a prescription. If a patient has to pay 20% and the insurance pays 80% of the cost of the medication, how much will the patient have to pay? (Choose the closest answer)