Does the average length of time to earn a doctorate differ from one field to another? Independent
Question:
Does the average length of time to earn a doctorate differ from one field to another? Independent random samples from large graduate schools gave the following averages for length of registered time (in years) from bachelor’s degree to doctorate. Sample A was taken from the humanities field, and sample B from the social sciences field
Use a 1% level of significance to test the claim that there is no difference in the distributions of time to complete a doctorate for the two fields.
(a) What is the level of significance? State the null and alternate hypotheses.
(b) Compute the sample test statistic. What is the sampling distribution?
What conditions are necessary to use this distribution?
(c) Find the P-value of the sample test statistic.
(d) Conclude the test.
(e) Interpret the conclusion in the context of the application.
Step by Step Answer:
Understandable Statistics Concepts And Methods
ISBN: 9781337119917
12th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase