×
Log in to StudySoup
Get Full Access to Stats Modeling The World - 4 Edition - Chapter 22 - Problem 35
Join StudySoup for FREE
Get Full Access to Stats Modeling The World - 4 Edition - Chapter 22 - Problem 35

Already have an account? Login here
×
Reset your password

Marriage In 1960, census results indicated that the age at which American men first

Stats Modeling the World | 4th Edition | ISBN: 9780321854018 | Authors: David E. Bock, Paul F. Velleman, Richard D. De Veaux ISBN: 9780321854018 481

Solution for problem 35 Chapter 22

Stats Modeling the World | 4th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Stats Modeling the World | 4th Edition | ISBN: 9780321854018 | Authors: David E. Bock, Paul F. Velleman, Richard D. De Veaux

Stats Modeling the World | 4th Edition

4 5 1 314 Reviews
25
2
Problem 35

Marriage In 1960, census results indicated that the age at which American men first married had a mean of 23.3 years. It is widely suspected that young people today are waiting longer to get married. We want to find out if the mean age of first marriage has increased during the past 40 years. a) Write appropriate hypotheses. b) We plan to test our hypothesis by selecting a random sample of 40 men who married for the first time last year. Do you think the necessary assumptions for inference are satisfied? Explain. c) Describe the approximate sampling distribution model for the mean age in such samples. d) The men in our sample married at an average age of 24.2 years, with a standard deviation of 5.3 years. Whats the P-value for this result? e) Explain (in context) what this P-value means. f) Whats your conclusion?

Step-by-Step Solution:
Step 1 of 3

SE(X) measures how close the sample AVG is likely to be to the true population AVG ● What’s the problem here –SE(X) depends on population SD –we don’t know population SD ● How could you approximate the populaUse() ̂ (called “hat”) means estimate or predicted () () = √ Confidence Interval (CI): a range of values (%) that catches the average/mean of the population Margin of Error Margin of Error  Interpretation of Confidence Interval: __% of all samples will

Step 2 of 3

Chapter 22, Problem 35 is Solved
Step 3 of 3

Textbook: Stats Modeling the World
Edition: 4
Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux
ISBN: 9780321854018

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Marriage In 1960, census results indicated that the age at which American men first