Statistical Reasoning for Everyday Life (5th Edition)
5th Edition
ISBN: 9780134494043
Author: Jeff Bennett, William L. Briggs, Mario F. Triola
Publisher: PEARSON
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Chapter 4.4, Problem 3E
To determine
Explain what is the result called if the test incorrectly indicates that one have consumed alcohol.
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For each of the time series, construct a line chart of the data and identify the characteristics of the time series (that is, random, stationary, trend, seasonal, or cyclical)
Date IBM9/7/2010 $125.959/8/2010 $126.089/9/2010 $126.369/10/2010 $127.999/13/2010 $129.619/14/2010 $128.859/15/2010 $129.439/16/2010 $129.679/17/2010 $130.199/20/2010 $131.79
1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
the United States is at most 10.3 pounds. A random sample of 100 people in the United States has
a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard
deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
2. The CEO of a manufacturing facility claims that the mean workday of the company's assembly
line employees is less than 8.5 hours. A random sample of 25 of the company's assembly line
employees has a mean workday of 8.2 hours. Assume the population standard deviation is 0.5
hour and the population is normally distributed. At a = 0.01, test the CEO's claim.
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
Statistics
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Chapter 4 Solutions
Statistical Reasoning for Everyday Life (5th Edition)
Ch. 4.1 - Average. Define and distinguish among mean,...Ch. 4.1 - Outliers. What are outliers? Describe the effects...Ch. 4.1 - Average Confusion. Briefly describe at least two...Ch. 4.1 - Weighting. What is a weighted mean, and when is it...Ch. 4.1 - Does It Make Sense? For Exercises 59, determine...Ch. 4.1 - Does It Make Sense? For Exercises 59, determine...Ch. 4.1 - Mode. In an analysis of salaries paid to sales...Ch. 4.1 - Employment Data. A survey asked people their...Ch. 4.1 - Mean Wage. To find the mean wage of restaurant...Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...
Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...Ch. 4.1 - Mean, Median, and Mode. In Exercises 1016, find...Ch. 4.1 - Cell Phone Radiation. Listed below are...Ch. 4.1 - Alphabetic States. The states of Alabama, Alaska,...Ch. 4.1 - Outlier Coke. The contents of cans of regular...Ch. 4.1 - Raising Your Grade. Suppose you have scores of 80,...Ch. 4.1 - Raising Your Grade. Suppose you have scores of 60,...Ch. 4.1 - Comparing Data. In Exercises 2225, find the mean...Ch. 4.1 - Comparing Data. In Exercises 2225, find the mean...Ch. 4.1 - Comparing Data. In Exercises 2225, find the mean...Ch. 4.1 - Prob. 25ECh. 4.1 - Weighted Mean. Compute the weighte means in...Ch. 4.1 - Class Grade. Ryan is taking an advanced math class...Ch. 4.1 - GPA. One common system for computing a grade point...Ch. 4.1 - Prob. 29ECh. 4.1 - Prob. 30ECh. 4.1 - 31. Stockholder Voting. A small company has six...Ch. 4.1 - Weighted Mean. In Exercises 3235, find the mean of...Ch. 4.1 - Weighted Mean. In Exercises 3235, find the mean of...Ch. 4.1 - Weighted Mean. In Exercises 3235, find the mean of...Ch. 4.1 - Weighted Mean. In Exercises 3235, find the mean of...Ch. 4.1 - U.S. Population Center. Imagine taking a huge flat...Ch. 4.2 - Modes. Distinguish between a uniform distribution...Ch. 4.2 - Prob. 2ECh. 4.2 - Prob. 3ECh. 4.2 - Prob. 4ECh. 4.2 - Prob. 5ECh. 4.2 - Does It Make Sense? For Exercises 58, determine...Ch. 4.2 - Does It Make Sense? For Exercises 58, determine...Ch. 4.2 - Does It Make Sense? For Exercises 58, determine...Ch. 4.2 - Prob. 9ECh. 4.2 - Distributions. In Exercises 912, describe the...Ch. 4.2 - Distributions. In Exercises 912, describe the...Ch. 4.2 - Distributions. In Exercises 912, describe the...Ch. 4.2 - Baseball Salaries. In a recent year, the 868...Ch. 4.2 - Boston Rainfall. The daily rainfall amounts (in...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.2 - Describing Distributions. For each distribution...Ch. 4.3 - Variation Matters. Consider two grocery stores at...Ch. 4.3 - Variation Measures. Briefly distinguish between...Ch. 4.3 - Quartiles and Percentiles. Briefly describe how...Ch. 4.3 - Standard Deviation. Describe the process of...Ch. 4.3 - Does It Make Sense? For Exercises 58, determine...Ch. 4.3 - Does It Make Sense? For Exercises 58, determine...Ch. 4.3 - Does It Make Sense? For Exercises 58, determine...Ch. 4.3 - Does It Make Sense? For Exercises 58, determine...Ch. 4.3 - Prob. 9ECh. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Range and Standard Deviation. Exercises 916 each...Ch. 4.3 - Prob. 17ECh. 4.3 - Comparing Variation. In Exercises 1720, find the...Ch. 4.3 - Prob. 19ECh. 4.3 - Comparing Variation. In Exercises 1720, find the...Ch. 4.3 - Calculating Percentiles. A statistics professor...Ch. 4.3 - Calculating Percentiles. A data set consists of...Ch. 4.3 - Understanding Standard Deviation. The following...Ch. 4.3 - Understanding Standard Deviation. The following...Ch. 4.3 - Comparing Data Sets. For each of Exercises 2528,...Ch. 4.3 - Comparing Data Sets. For each of Exercises 2528,...Ch. 4.3 - Comparing Data Sets. For each of Exercises 2528,...Ch. 4.3 - Comparing Data Sets. For each of Exercises 2528,...Ch. 4.3 - Manufacturing. You are in charge of a...Ch. 4.3 - Prob. 30ECh. 4.3 - Prob. 31ECh. 4.3 - Prob. 32ECh. 4.4 - False Positive and False Negative. Professional...Ch. 4.4 - Positive Test Result. A professional soccer player...Ch. 4.4 - Prob. 3ECh. 4.4 - Prob. 4ECh. 4.4 - Does It Make Sense? For Exercises 58, determine...Ch. 4.4 - Does It Make Sense? For Exercises 58, determine...Ch. 4.4 - Does It Make Sense? For Exercises 58, determine...Ch. 4.4 - Does It Make Sense? For Exercises 58, determine...Ch. 4.4 - Prob. 9ECh. 4.4 - Passing Percentages. The table below shows the...Ch. 4.4 - Test Scores. The table below shows eighth-grade...Ch. 4.4 - Test Scores. Consider the following table...Ch. 4.4 - Prob. 13ECh. 4.4 - Prob. 14ECh. 4.4 - Basketball Records. Consider the following...Ch. 4.4 - Better Drug. Two drugs, A and B, were tested on a...Ch. 4.4 - Prob. 17ECh. 4.4 - Disease Test. Suppose a test for a disease is 80%...Ch. 4.4 - Prob. 19ECh. 4.4 - Drug Trials. (This problem is based on an example...Ch. 4.4 - HIV Risks. The New York State Department of Health...Ch. 4 - Chocolate Chips. Listed below are counts of the...Ch. 4 - Prob. 2CRECh. 4 - a. What is the standard deviation for a data set...Ch. 4 - When you add the earthquake magnitudes 2.45, 3.62,...Ch. 4 - Prob. 2CQCh. 4 - Prob. 3CQCh. 4 - Prob. 4CQCh. 4 - Prob. 5CQCh. 4 - Prob. 6CQCh. 4 - A histogram is constructed for a large set of...Ch. 4 - Prob. 8CQCh. 4 - Prob. 9CQCh. 4 - Identify the names of the components that...
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