Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 37E
Marriage In 1960, census results indicated that the age at which American men first married had a
- 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. That results in a t-statistic of 1.074. What is the P-value for this?
- e) Explain (in context) what this P-value means.
- f) What’s your conclusion?
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Check out a sample textbook solutionChapter 18 Solutions
Intro Stats
Ch. 18.2 - Every 10 years, the United States takes a census....Ch. 18.2 - Prob. 2JCCh. 18.2 - Prob. 3JCCh. 18.2 - Every 10 years, the United States takes a census....Ch. 18.2 - Prob. 5JCCh. 18.2 - Prob. 6JCCh. 18 - Salmon A specialty food company sells whole King...Ch. 18 - LSAT The LSAT (a test taken for law school...Ch. 18 - Prob. 3ECh. 18 - t-models, part II Using the t tables, software, or...
Ch. 18 - t-models, part III Describe how the shape, center,...Ch. 18 - Prob. 6ECh. 18 - Prob. 7ECh. 18 - Home sales again In the previous exercise, you...Ch. 18 - Prob. 9ECh. 18 - Prob. 10ECh. 18 - Prob. 11ECh. 18 - Prob. 12ECh. 18 - Prob. 13ECh. 18 - Prob. 14ECh. 18 - Cattle Livestock are given a special feed...Ch. 18 - Prob. 16ECh. 18 - Meal plan After surveying students at Dartmouth...Ch. 18 - Prob. 18ECh. 18 - Prob. 19ECh. 18 - Prob. 20ECh. 18 - Prob. 21ECh. 18 - Credit card charges A credit card company takes a...Ch. 18 - 23. Normal temperature The researcher described in...Ch. 18 - Parking Hoping to lure more shoppers downtown, a...Ch. 18 - 25. Normal temperatures, part II Consider again...Ch. 18 - 26. Parking II Suppose that, for budget planning...Ch. 18 - Speed of light In 1882, Michelson measured the...Ch. 18 - Prob. 28ECh. 18 - Prob. 29ECh. 18 - Prob. 30ECh. 18 - Prob. 31ECh. 18 - Prob. 32ECh. 18 - Prob. 33ECh. 18 - Golf balls The United States Golf Association...Ch. 18 - Prob. 35ECh. 18 - Computer lab fees The technology committee has...Ch. 18 - Marriage In 1960, census results indicated that...Ch. 18 - Prob. 38ECh. 18 - Prob. 39ECh. 18 - Prob. 40ECh. 18 - Prob. 41ECh. 18 - Prob. 42ECh. 18 - Prob. 43ECh. 18 - 44. Yogurt Consumer Reports tested 11 brands of...Ch. 18 - 45. Maze Psychology experiments sometimes involve...Ch. 18 - Prob. 46ECh. 18 - 47. Driving distance 2011 How far do professional...Ch. 18 - Prob. 48E
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