Pearson eText for Elementary Statistics: Picturing the World -- Instant Access (Pearson+)
7th Edition
ISBN: 9780137504329
Author: Ron Larson, Betsy Farber
Publisher: PEARSON+
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Textbook Question
Chapter 6, Problem 1CQ
The winning times (in hours) for a sample of 30 randomly selected Boston Marathon Women’s Open Division champions are shown in the table at the left. (Source: Boston Athletic Association)
- (a) Find the point estimate of the population mean.
- (b) Find the margin of error for a 95% confidence level.
- (c) Construct a 95% confidence interval for the population mean. Interpret the results.
- (d) Does it seem possible that the population mean could be greater than 2.75 hours? Explain.
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7. In a 2011 article, M. Radelet and G. Pierce reported a logistic prediction equation
for the death penalty verdicts in North Carolina. Let Y denote whether a subject
convicted of murder received the death penalty (1=yes), for the defendant's race
h (h1, black; h = 2, white), victim's race i (i = 1, black; i = 2, white), and
number of additional factors j (j = 0, 1, 2). For the model
logit[P(Y = 1)] = a + ß₁₂ + By + B²²,
they reported = -5.26, D
â
BD
=
0, BD
=
0.17, BY = 0, BY
=
0.91, B = 0,
B = 2.02, B = 3.98.
(a) Estimate the probability of receiving the death penalty for the group most
likely to receive it. [4 pts]
(b) If, instead, parameters used constraints 3D = BY = 35 = 0, report the esti-
mates. [3 pts]
h
(c) If, instead, parameters used constraints Σ₁ = Σ₁ BY = Σ; B = 0, report
the estimates. [3 pts]
Hint the probabilities, odds and odds ratios do not change with constraints.
Solve please and thank you!
Solve please and thank you!
Chapter 6 Solutions
Pearson eText for Elementary Statistics: Picturing the World -- Instant Access (Pearson+)
Ch. 6.1 - In Example 1, the researcher selects a second...Ch. 6.1 - Use the data in Try It Yourself 1 and a 95%...Ch. 6.1 - Use the data in Try It Yourself 1 to construct a...Ch. 6.1 - Use the data in Example 1 and technology to...Ch. 6.1 - Construct a 90% confidence interval for the...Ch. 6.1 - In Example 6, how many student-athletes must the...Ch. 6.1 - When estimating a population mean, are you more...Ch. 6.1 - Which statistic is the best unbiased estimator for...Ch. 6.1 - For the same sample statistics, which level of...Ch. 6.1 - You construct a 95% confidence interval for a...
Ch. 6.1 - In Exercises 58, find the critical value Zc...Ch. 6.1 - In Exercises 58, find the critical value Zc...Ch. 6.1 - In Exercises 58, find the critical value Zc...Ch. 6.1 - In Exercises 58, find the critical value Zc...Ch. 6.1 - Graphical Analysis In Exercises 912, use the...Ch. 6.1 - Graphical Analysis In Exercises 912, use the...Ch. 6.1 - Graphical Analysis In Exercises 912, use the...Ch. 6.1 - Graphical Analysis In Exercises 912, use the...Ch. 6.1 - In Exercises 1316, find the margin of error for...Ch. 6.1 - In Exercises 1316, find the margin of error for...Ch. 6.1 - In Exercises 1316, find the margin of error for...Ch. 6.1 - In Exercises 1316, find the margin of error for...Ch. 6.1 - Matching In Exercises 1720, match the level of...Ch. 6.1 - Matching In Exercises 1720, match the level of...Ch. 6.1 - Matching In Exercises 1720, match the level of...Ch. 6.1 - Matching In Exercises 1720, match the level of...Ch. 6.1 - In Exercises 2124, construct the indicated...Ch. 6.1 - In Exercises 2124, construct the indicated...Ch. 6.1 - In Exercises 2124, construct the indicated...Ch. 6.1 - In Exercises 2124, construct the indicated...Ch. 6.1 - In Exercises 2528, use the confidence interval to...Ch. 6.1 - In Exercises 2528, use the confidence interval to...Ch. 6.1 - In Exercises 2528, use the confidence interval to...Ch. 6.1 - In Exercises 2528, use the confidence interval to...Ch. 6.1 - In Exercises 2932, determine the minimum sample...Ch. 6.1 - In Exercises 2932, determine the minimum sample...Ch. 6.1 - In Exercises 2932, determine the minimum sample...Ch. 6.1 - In Exercises 2932, determine the minimum sample...Ch. 6.1 - Finding the Margin of Error In Exercises 33 and...Ch. 6.1 - Finding the Margin of Error In Exercises 33 and...Ch. 6.1 - Constructing Confidence Intervals In Exercises...Ch. 6.1 - Constructing Confidence Intervals In Exercises...Ch. 6.1 - Constructing Confidence Intervals In Exercises...Ch. 6.1 - Constructing Confidence Intervals In Exercises...Ch. 6.1 - In Exercise 35, does it seem possible that the...Ch. 6.1 - In Exercise 36, does it seem possible that the...Ch. 6.1 - In Exercise 37, does it seem possible that the...Ch. 6.1 - In Exercise 38, does it seem possible that the...Ch. 6.1 - When all other quantities remain the same, how...Ch. 6.1 - Constructing Confidence Intervals In Exercises 45...Ch. 6.1 - Constructing Confidence Intervals In Exercises 45...Ch. 6.1 - Determining a Minimum Sample Size Determine the...Ch. 6.1 - Determining a Minimum Sample Size Determine the...Ch. 6.1 - Cholesterol Contents of Cheese A cheese processing...Ch. 6.1 - Ages of College Students An admissions director...Ch. 6.1 - Paint Can Volumes A paint manufacturer uses a...Ch. 6.1 - Juice Dispensing Machine A beverage company uses a...Ch. 6.1 - Soccer Balls A soccer ball manufacturer wants to...Ch. 6.1 - Tennis Balls A tennis ball manufacturer wants to...Ch. 6.1 - When estimating the population mean, why not...Ch. 6.1 - When all other quantities remain the same, how...Ch. 6.1 - Determine the finite population coection factor...Ch. 6.1 - 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In Exercises 912, construct the indicated...Ch. 6.2 - In Exercises 1316, use the confidence interval to...Ch. 6.2 - In Exercises 1316, use the confidence interval to...Ch. 6.2 - In Exercises 1316, use the confidence interval to...Ch. 6.2 - In Exercises 1316, use the confidence interval to...Ch. 6.2 - Constructing a Confidence Interval In Exercises...Ch. 6.2 - Constructing a Confidence Interval In Exercises...Ch. 6.2 - Constructing a Confidence Interval In Exercises...Ch. 6.2 - Constructing a Confidence Interval In Exercises...Ch. 6.2 - You research commute times to work and find that...Ch. 6.2 - You research driving distances to work and find...Ch. 6.2 - You research prices of cell phones and find that...Ch. 6.2 - You research repair costs of mobile devices and...Ch. 6.2 - Constructing a Confidence Interval in Exercises...Ch. 6.2 - Constructing a Confidence Interval in Exercises...Ch. 6.2 - Constructing a Confidence Interval in Exercises...Ch. 6.2 - Constructing a Confidence Interval in Exercises...Ch. 6.2 - 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Exercises...Ch. 6.2 - Constructing a Confidence Interval Ir. Exercises...Ch. 6.2 - In Exercise 31, the population mean salary is...Ch. 6.2 - In Exercise 32, the population mean salary is...Ch. 6.2 - Choosing a Distribution In Exercises 3538, use the...Ch. 6.2 - Choosing a Distribution In Exercises 3538, use the...Ch. 6.2 - Choosing a Distribution In Exercises 3538, use the...Ch. 6.2 - Choosing a Distribution In Exercises 3538, use the...Ch. 6.2 - In Exercise 36, does it seem possible that the...Ch. 6.2 - In Exercise 38, does it seem possible that the...Ch. 6.2 - Tennis Ball Manufacturing A company manufactures...Ch. 6.2 - Light Bulb Manufacturing A company manufactures...Ch. 6.2 - Prob. 1ACh. 6.2 - In a random sample of 24 high school students, the...Ch. 6.2 - A marathon is a fool race with a distance of 26.22...Ch. 6.2 - A marathon is a fool race with a distance of 26.22...Ch. 6.2 - A marathon is a fool race with a distance of 26.22...Ch. 6.2 - A marathon is a fool race with a distance of 26.22...Ch. 6.2 - A marathon is a fool race with a distance of 26.22...Ch. 6.2 - A marathon is a fool race with a distance of 26.22...Ch. 6.3 - A poll surveyed 4780 U.S. adults about how often...Ch. 6.3 - Use the data in Try It Yourself 1 to construct a...Ch. 6.3 - Use the data in Example 3 to construct a 99%...Ch. 6.3 - A researcher is estimating the population...Ch. 6.3 - True or False? In Exercises 1 and 2, determine...Ch. 6.3 - True or False? 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Assume the...Ch. 6 - In a survey of 20% U.S. adults, 1740 think...Ch. 6 - The data set represents the weights (in pounds) of...Ch. 6 - The data set represents the scores of 12 randomly...Ch. 6 - Use the standard normal distribution or the...Ch. 6 - The Safe Drinking Water Act, which was passed in...Ch. 6 - The Safe Drinking Water Act, which was passed in...Ch. 6 - The Safe Drinking Water Act, which was passed in...Ch. 6 - Since 1935, the Gallup Organization has conducted...Ch. 6 - THE GALLUP ORGANIZATION www.gallup.com Since 1935,...Ch. 6 - Since 1935, the Gallup Organization has conducted...Ch. 6 - Since 1935, the Gallup Organization has conducted...
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