A null hypothesis is that the probability is 0.7 that a new drug will provide relief in a randomly selected patient. The alternative is that the probability of relief is greater than 0.7. Suppose the treatment is used on 500 patients and there are 380 successes. How would a p-value be calculated in this situation?
A) Find the chance of 380 or more successes, calculated assuming the true success rate is greater than 0.7.
B) Find the chance of 380 or more successes, calculated assuming the true success rate is 0.7.
C) Find the chance of fewer than 380 successes, calculated assuming the true success rate is greater than 0.7.
D) Find the chance of fewer than 380 successes, calculated assuming true success rate is 0.7.

Question

Quizplus · Accepted Answer

The p-value is calculated under the assumption that the null hypothesis is true. Therefore, it involves finding the probability of observing the data (380 or more successes) or something more extreme, given that the true success rate is 0.7.

A Null Hypothesis Is That the Probability Is 0