Navigation » List of Schools, Subjects, and Courses » Math 136 – Introduction to Statistics » Section 11.3 Homework » Section 11.3 Homework Question 1 » Section 11.3 Homework Question 1 Sample Answers
Section 11.3 Homework
1. Assume that both populations are normally distributed.
a) Test whether ì1≠ì2 at the á=0.01 level of significance for the given sample data.
b) Construct a 99% confidence interval about ì1−ì2.
a) Perform a hypothesis test. Determine the null and alternative hypotheses.
Determine the test statistic.
Determine the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice.
The critical value is
The lower critical value is _____ . The upper critical value is
Should the hypothesis be rejected?
___________ the null hypothesis because the test statistic _________ the critical region.
b) Construct a 99% confidence interval about .
The confidence interval is the range from ____ to ____