1. Find out if the statement is a typical null hypothesis (Ho) or alternative hypothesis (Ha). The average time to graduate for the undergraduate English majors is less than the average time to graduate for undergraduate history majors.
A) Null hypothesis
B) Alternative hypothesis
2. Null and alternative hypotheses are statements regarding
A) Population parameters.
B) Sample parameters.
C) Sample statistics.
D) It depends - sometimes population parameters and sometimes sample statistics.
3. Which statement is right about a p-value?
A) The smaller the p-value the stronger the evidence in favor of the alternative hypothesis.
B) The smaller the p-value the stronger the evidence in favor the null hypothesis
C) Whether a small p-value provides evidence in favor of the null hypothesis depends on whether the test is one-sided or two-sided.
D) Whether a small p-value provides evidence in favor of the alternative hypothesis depends on whether the test is one-sided or two-sided.
4. 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.
5. The designated level (typically set at 0.05) to which the p-value is compared to, in order to decide whether the alternative hypothesis is accepted or not is called a
A) Statistically significant result.
B) Test statistic.
C) Significance level.