Elementary Statistics Using Excel (6th Edition)
6th Edition
ISBN: 9780134506623
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 7, Problem 2RE
To determine
To find: The number of students that must be surveyed.
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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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find the mean.
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with mean zen and variance 6
A psychology researcher conducted a Chi-Square Test of Independence to examine whether there is a relationship between college students’ year in school (Freshman, Sophomore, Junior, Senior) and their preferred coping strategy for academic stress (Problem-Focused, Emotion-Focused, Avoidance). The test yielded the following result:
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Interpret the results of this analysis. In your response, clearly explain:
Whether the result is statistically significant and why.
What this means about the relationship between year in school and coping strategy.
What the researcher should conclude based on these findings.
Chapter 7 Solutions
Elementary Statistics Using Excel (6th Edition)
Ch. 7.1 - 1. Poll Results in the Media USA Today provided...Ch. 7.1 - 2. Margin of Error For the poll described in...Ch. 7.1 - 3. Notation For the poll described in Exercise 1,...Ch. 7.1 - 4. Confidence Levels Given specific sample data,...Ch. 7.1 - Prob. 5BSCCh. 7.1 - Prob. 6BSCCh. 7.1 - Prob. 7BSCCh. 7.1 - Prob. 8BSCCh. 7.1 - Formats of Confidence Intervals. In Exercises...Ch. 7.1 - Prob. 10BSC
Ch. 7.1 - Prob. 11BSCCh. 7.1 - Prob. 12BSCCh. 7.1 - Constructing and Interpreting Confidence...Ch. 7.1 - Prob. 14BSCCh. 7.1 - Prob. 15BSCCh. 7.1 - Prob. 16BSCCh. 7.1 - Critical Thinking. In Exercises 17–28, use the...Ch. 7.1 - Prob. 18BSCCh. 7.1 - Prob. 19BSCCh. 7.1 - Critical Thinking. In Exercises 17–28, use the...Ch. 7.1 - 21. Touch Therapy When she was 9 years of age,...Ch. 7.1 - Prob. 22BSCCh. 7.1 - Prob. 23BSCCh. 7.1 - Critical Thinking. In Exercises 17–28, use the...Ch. 7.1 - Prob. 25BSCCh. 7.1 - Prob. 26BSCCh. 7.1 - Prob. 27BSCCh. 7.1 - Prob. 28BSCCh. 7.1 - Using Appendix B Data Sets. In Exercises 29 and...Ch. 7.1 - Prob. 30BSCCh. 7.1 - Determining Sample Size. In Exercises 31–38, use...Ch. 7.1 - Determining Sample Size. In Exercises 31–38, use...Ch. 7.1 - Determining Sample Size. In Exercises 31–38, use...Ch. 7.1 - Determining Sample Size. In Exercises 31–38, use...Ch. 7.1 - Prob. 35BSCCh. 7.1 - Prob. 36BSCCh. 7.1 - Prob. 37BSCCh. 7.1 - Prob. 38BSCCh. 7.1 - Prob. 39BBCh. 7.1 - Prob. 40BBCh. 7.1 - Prob. 41BBCh. 7.2 - In Exercises 1–3, refer to the accompanying screen...Ch. 7.2 - Statistical Literacy and Critical Thinking
In...Ch. 7.2 - Prob. 3BSCCh. 7.2 - Prob. 4BSCCh. 7.2 - Prob. 5BSCCh. 7.2 - Prob. 6BSCCh. 7.2 - Prob. 7BSCCh. 7.2 - Prob. 8BSCCh. 7.2 - Prob. 9BSCCh. 7.2 - Prob. 10BSCCh. 7.2 - Prob. 11BSCCh. 7.2 - Prob. 12BSCCh. 7.2 - Prob. 13BSCCh. 7.2 - Prob. 14BSCCh. 7.2 - Prob. 15BSCCh. 7.2 - Confidence Intervals. In Exercises 9–24, construct...Ch. 7.2 - Prob. 17BSCCh. 7.2 - Prob. 18BSCCh. 7.2 - Prob. 19BSCCh. 7.2 - Prob. 20BSCCh. 7.2 - Prob. 21BSCCh. 7.2 - Confidence Intervals. In Exercises 9–24, construct...Ch. 7.2 - Prob. 23BSCCh. 7.2 - Prob. 24BSCCh. 7.2 - Prob. 25BSCCh. 7.2 - In Exercises 25 – 28, use the Appendix B data sets...Ch. 7.2 - In Exercises 25 – 28, use the Appendix B data sets...Ch. 7.2 - Prob. 28BSCCh. 7.2 - Prob. 29BSCCh. 7.2 - Prob. 30BSCCh. 7.2 - Prob. 31BSCCh. 7.2 - Prob. 32BSCCh. 7.2 - Prob. 33BSCCh. 7.2 - Prob. 34BSCCh. 7.2 - Prob. 35BSCCh. 7.2 - Prob. 36BSCCh. 7.2 - Prob. 37BBCh. 7.2 - Prob. 38BBCh. 7.2 - Prob. 39BBCh. 7.3 - Prob. 1BSCCh. 7.3 - Prob. 2BSCCh. 7.3 - Prob. 3BSCCh. 7.3 - 4. Normality Requirement What is different about...Ch. 7.3 - Prob. 5BSCCh. 7.3 - Prob. 6BSCCh. 7.3 - Prob. 7BSCCh. 7.3 - Prob. 8BSCCh. 7.3 - Prob. 9BSCCh. 7.3 - Finding Confidence Intervals. In Exercises 9–16,...Ch. 7.3 - Prob. 11BSCCh. 7.3 - Prob. 12BSCCh. 7.3 - Prob. 13BSCCh. 7.3 - Prob. 14BSCCh. 7.3 - Finding Confidence Intervals. In Exercises 9–16,...Ch. 7.3 - 16. Comparing Waiting Lines
a. The values listed...Ch. 7.3 - Prob. 17BSCCh. 7.3 - Prob. 18BSCCh. 7.3 - Prob. 19BSCCh. 7.3 - Prob. 20BSCCh. 7.3 - Prob. 21BSCCh. 7.3 - Prob. 22BSCCh. 7.3 - Prob. 23BBCh. 7.3 - Prob. 24BBCh. 7.4 - Prob. 1BSCCh. 7.4 - Prob. 2BSCCh. 7.4 - 3. Bootstrap Sample Given the sample data from...Ch. 7.4 - Prob. 4BSCCh. 7.4 - Prob. 5BSCCh. 7.4 - Prob. 6BSCCh. 7.4 - Prob. 7BSCCh. 7.4 - Prob. 8BSCCh. 7.4 - Prob. 9BSCCh. 7.4 - Prob. 10BSCCh. 7.4 - Prob. 11BSCCh. 7.4 - Prob. 12BSCCh. 7.4 - Prob. 17BSCCh. 7.4 - Prob. 18BSCCh. 7.4 - Prob. 19BSCCh. 7.4 - Prob. 20BSCCh. 7.4 - Analysis of Last Digits Weights of respondents...Ch. 7.4 - Analysis of Last Digits Repeat Exercise 21...Ch. 7.4 - Prob. 23BBCh. 7.4 - Prob. 24BBCh. 7 - Prob. 1CQQCh. 7 - Prob. 2CQQCh. 7 - Prob. 3CQQCh. 7 - 4. Loose Change USA Today reported that 40% of...Ch. 7 - 5. Sample Size for Proportion Find the sample size...Ch. 7 - Prob. 6CQQCh. 7 - Prob. 7CQQCh. 7 - Prob. 8CQQCh. 7 - Prob. 9CQQCh. 7 - Prob. 10CQQCh. 7 - Prob. 1RECh. 7 - Prob. 2RECh. 7 - Prob. 3RECh. 7 - Prob. 4RECh. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - Prob. 7RECh. 7 - Prob. 8RECh. 7 - Prob. 9RECh. 7 - Prob. 1CRECh. 7 - Prob. 2CRECh. 7 - Prob. 3CRECh. 7 - Prob. 4CRECh. 7 - Prob. 5CRECh. 7 - Prob. 6CRECh. 7 - Prob. 7CRECh. 7 - Prob. 8CRECh. 7 - Prob. 1EPCh. 7 - Prob. 1FDDCh. 7 - Prob. 2FDDCh. 7 - Prob. 3FDDCh. 7 - Prob. 4FDDCh. 7 - Prob. 5FDD
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