8. Probability & Statistics

A spinner is divided equally into $5$5 sections, but $2$2 of them are colored white.

a

What is the probability of landing on white?

b

If the spinner is spun $685$685 times, how many times would you expect it to land on white?

Easy

Approx a minute

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Develop a probability model and use it to find probabilities of events; compare probabilities from a model to observed frequencies; and if the agreement is not good, explain possible sources of the discrepancy.

Develop a uniform probability model by assigning equal probability to all outcomes, and use the model to determine probabilities of events.

Develop a probability model (which may not be uniform) by observing frequencies in data generated from a chance process.