Introductory Statistics (2nd Edition)
2nd Edition
ISBN: 9780321978271
Author: Robert Gould, Colleen N. Ryan
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 83CRE
Males’ Body Temperatures A study of human body temperatures using healthy men showed a mean of
a. Find the percentage of healthy men with temperatures below
b. What temperature does a healthy man have if his temperature is at the 76th percentile?
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5.5
A glass bottle manufacturing company has recorded data on the average
number of defects per 10,000 bottles due to stones (small pieces of rock
embedded in the bottle wall) and the number of weeks since the last furnace
overhaul. The data are shown below.
Defects per 10,000
Weeks
13.0
4
16.1
5
14.5
6
17.8
7
22.0
8
27.4
9
16.8
10
65.6
☐☐
Defects per 10,000
Weeks
34.2
11
12
49.2
13
66.2
81.2
87.4
14
15
16
114.5
17
a. Fit a straight-line regression model to the data and perform the standard
tests for model adequacy.
b. Suggest an appropriate transformation to eliminate the problems encoun-
tered in part a. Fit the transformed model and check for adequacy.
One estimate of the proportion of children with autism in the United States is 1 in 100 (Source: http://www.cbsnews.com/stories/2009/10/05/health/main5363192.shtml). Suppose you are interested in the rate of autism among current school-aged children in Utah. You collect a sample of 400 children between the ages of 5 and 18 and find that three have had a previous diagnosis of an autism disorder. You plan to calculate a 95% confidence interval estimator of the proportion of school-aged children in Utah who have ever had a diagnosis of an autism disorder.
Which of the following is the most likely reason you would use a Wilson estimator to calculate the confidence interval estimator?
It is uncomfortable to define having been diagnosed with autism as a success.
It is possible that if even the actual proportion in Utah is 1%, your sample may only have very few children who have had a previous diagnosis of an autism disorder.
It is an easier way to calculate the confidence…
Chapter 6 Solutions
Introductory Statistics (2nd Edition)
Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - Loaded Die (Example 2) A magician has shaved an...Ch. 6 - Prob. 6SECh. 6 - Distribution of Two Thumbtacks When a certain type...Ch. 6 - Distribution of Two Coin Flips When a fair coin is...Ch. 6 - Two Thumbtacks a. From your answers in Exercise...Ch. 6 - Two Coins a. From your answers in Exercise 6.8,...
Ch. 6 - Snow Depth (Example 3) Eric wants to go skiing...Ch. 6 - Snow Depth Refer to Exercise 6.11. What is the...Ch. 6 - Applying the Empirical Rule with z-Scores The...Ch. 6 - IQs Wechsler IQs are approximately Normally...Ch. 6 - SAT Scores Quantitative SAT scores are...Ch. 6 - Women’s Heights Assume that college women’s...Ch. 6 - Women’s height (Example 4) College women have a...Ch. 6 - Act scores ACT score are approximately Normally...Ch. 6 - Standard Normal Use the table or technology to...Ch. 6 - Standard Normal Use a table or technology to...Ch. 6 - Standard Normal Use a table or technology to...Ch. 6 - Standard Normal Use a table or technology to...Ch. 6 - Extreme Positive z -Scores For each question, find...Ch. 6 - Extreme Negative z-Scores For each question, find...Ch. 6 - Females' SAT Scores (Example 5) According to data...Ch. 6 - Males' SAT Scores According to data from the...Ch. 6 - Stanford-Binet IQs Stanford-Binet IQ scores for...Ch. 6 - Stanford-Binet IQs Stanford-Binet IQs for children...Ch. 6 - Birth Length (Example 6) According to National...Ch. 6 - White Blood Cells The distribution of white blood...Ch. 6 - Red Blood Cells: Men The distribution of red blood...Ch. 6 - Red Blood Cells: Women Answer the previous...Ch. 6 - SAT Scores in Alaska In Alaska in 2010, the...Ch. 6 - SAT Scores in Connecticut In Connecticut in 2010,...Ch. 6 - SAT Scores in New Jersey In New Jersey in 2010,...Ch. 6 - SAT Scores in Texas In Texas in 2010, the average...Ch. 6 - New York City Weather New York City’s mean minimum...Ch. 6 - Women's Heights Assume for this question that...Ch. 6 - Probability or Measurement (Inverse)? (Example 7)...Ch. 6 - Probability or Measurement (Inverse)? The Normal...Ch. 6 - Inverse Normal, Standard In a standard Normal...Ch. 6 - Inverse Normal, Standard In a standard Normal...Ch. 6 - Inverse Normal, Standard Assume a standard Normal...Ch. 6 - Inverse Normal, Standard Assume a standard Normal...Ch. 6 - Females' SAT Scores (Example 8) According to the...Ch. 6 - Males' SAT Scores According to the College Board,...Ch. 6 - Tall Club, Women Suppose there is a club for tall...Ch. 6 - Tall Club, Men Suppose there is a club for tall...Ch. 6 - Women’s Heights Suppose college women’s heights...Ch. 6 - Men’s Heights Suppose college men’s heights are...Ch. 6 - Inverse SATs Critical reading SAT scores are...Ch. 6 - Inverse Women’s Heights College women have heights...Ch. 6 - Girls’ and Women’s Heights According to the...Ch. 6 - Boys’ and Men’s Heights According to the National...Ch. 6 - Cats’ Birth Weights The average birth weight of...Ch. 6 - Elephants’ Birth Weights The average birth weight...Ch. 6 - Gender of Children (Example 10) A married couple...Ch. 6 - Coin Flip A coin will be flipped four times, and...Ch. 6 - Coin Flips (Example 10) A teacher wants to find...Ch. 6 - Twins In Exercise 6.59 you are told to assume that...Ch. 6 - Divorce Suppose that the probability that a...Ch. 6 - Divorce Suppose that the probability that a...Ch. 6 - Identifying n, p, and x (Example 11) For each...Ch. 6 - Identifying n, p, and x For each situation,...Ch. 6 - Stolen Bicycles (Example 12) According to the...Ch. 6 - Florida Recidivism Rate The three-year recidivism...Ch. 6 - Prob. 67SECh. 6 - Cornell Admission The undergraduate admission rate...Ch. 6 - Wisconsin Graduation Wisconsin has the highest...Ch. 6 - Colorado Graduation Colorado has a high school...Ch. 6 - Florida Homicide Clearance The homicide clearance...Ch. 6 - Virginia Homicide Clearance The homicide clearance...Ch. 6 - DWI Convictions (Example 13) In New Mexico, about...Ch. 6 - Internet Access A 2013 Gallup poll indicated that...Ch. 6 - Drunk Walking You may have heard that drunk...Ch. 6 - Texting While Driving According to a Pew poll in...Ch. 6 - Coin Flip (Example 14) A fair coin is flipped 50...Ch. 6 - Drivers Aged 60-65 According to GMAC Insurance, 20...Ch. 6 - Prob. 79SECh. 6 - Prob. 80SECh. 6 - Birth Length A study of U.S. births published on...Ch. 6 - Birth Length A study of U.S. births published on...Ch. 6 - Males’ Body Temperatures A study of human body...Ch. 6 - Females’ Body Temperatures A study of human body...Ch. 6 - Prob. 85CRECh. 6 - Cremation Rates in Mississippi, Binomial and...Ch. 6 - Prob. 87CRECh. 6 - Quantitative SAT Scores, Normal and Binomial The...Ch. 6 - Prob. 89CRECh. 6 - Birth Length and z-Scores, Inverse Babies in the...
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