Question 1. Consider the following results for two samples randomly taken from two normal populations with equal variances.

a.   Develop a 95% confidence interval for the difference between the two population means.

b.   Is there conclusive evidence that one population has a larger mean? Explain.

Question  2. As a general guideline, the research hypothesis should be stated as the 

Question  3. As the degrees of freedom increase, the t distribution approaches the

Question 4. Two approaches to drawing a conclusion in a hypothesis test are

Question 5. In hypothesis testing, the alternative hypothesis is