INTRODUCTION TO STATISTICS & DATA ANALYS
6th Edition
ISBN: 9780357420447
Author: PECK
Publisher: CENGAGE L
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Chapter 1.4, Problem 13E
Classify each of the following variables as either categorical or numerical. For those that are numerical, determine whether they are discrete or continuous.
- a. Brand of computer purchased by a customer
- b. State of birth for someone born in the United States
- c. Price of a textbook
- d. Concentration of a contaminant (micrograms per cubic centimeter) in a water sample
- e. Zip code (Think carefully about this one.)
- f. Actual weight of coffee in a 1-pound can, labeled as containing 1 pound
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1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
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deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
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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
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Statistics
Chapter 1 Solutions
INTRODUCTION TO STATISTICS & DATA ANALYS
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