Coke vs. Pepsi Suppose you are testing someone to see if he or she 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.
The alternative is one sided: Ha: p0 > 0.5. The person gets 13 right out of 20. The p-value comes out to be 0.090. Explain the meaning of the p-value.