Question: Suppose you are testing someone to see whether she or he can tell Coke from Pepsi, and you are using 20 trials, half with Coke

Suppose you are testing someone to see whether she or he can tell Coke from Pepsi, and you are using 20 trials, half with Coke and half with Pepsi. The null hypothesis is that the person is guessing.

a. About how many should you expect the person to get right under the null hypothesis that the person is guessing?

b. Suppose person A gets 13 right out of 20, and person B gets 18 right out of 20. Which will have a smaller p-value, and why?

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