Introductory Statistics
1st Edition
ISBN: 9781938168208
Author: Barbara Illowsky, Susan Dean
Publisher: OpenStax College
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Textbook Question
Chapter 10, Problem 115H
Ten individuals went on a low−fat diet for 12 weeks to lower their cholesterol. The data are recorded in Table 10.30. Do you think that their cholesterol levels were significantly lowered?
Starting cholesterol level | Ending cholesterol level |
140 | 140 |
220 | 230 |
110 | 120 |
240 | 220 |
200 | 190 |
180 | 150 |
190 | 200 |
360 | 300 |
280 | 300 |
260 | 240 |
Table 10.30
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Chapter 10 Solutions
Introductory Statistics
Ch. 10 - Two samples are shown in Table 10.2. Both have...Ch. 10 - A study is done to determine if Company A retains...Ch. 10 - Weighted alpha is a measure of risk-adjusted...Ch. 10 - The means of the number of revolutions per minute...Ch. 10 - Two types of valves are being tested to determine...Ch. 10 - A concerned group of citizens wanted to know if...Ch. 10 - A study was conducted to investigate how effective...Ch. 10 - A new prep class was designed to improve SAT test...Ch. 10 - Five ball players think they can throw the same...Ch. 10 - Two Population Means with Unknown Standard...
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Researchers interviewed street prostitutes in...Ch. 10 - A powder diet is tested on 49 people, and a liquid...Ch. 10 - Suppose a statistics instructor believes that...Ch. 10 - A study is done to determine if students in the...Ch. 10 - Parents of teenage boys often complain that auto...Ch. 10 - A group of transfer bound students wondered if...Ch. 10 - Some manufacturers claim that non-hybrid sedan...Ch. 10 - A baseball fan wanted to know if there is a...Ch. 10 - One of the questions in a study of marital...Ch. 10 - A recent drug survey showed an increase in the use...Ch. 10 - We are interested in whether the proportions of...Ch. 10 - Elizabeth Mjelde, an art history professor, was...Ch. 10 - A recent year was randomly picked from 1985 to the...Ch. 10 - Use the following information to answer the next...Ch. 10 - Use the following information to answer the next...Ch. 10 - Use the following information to answer the next...Ch. 10 - Researchers conducted a study to find out if there...Ch. 10 - Adults aged 18 years old and older were randomly...Ch. 10 - Two computer users were discussing tablet...Ch. 10 - A group of friends debated whether more men use...Ch. 10 - While her husband spent 21/2. hours picking out...Ch. 10 - We are interested in whether children’s...Ch. 10 - Joan Nguyen recently claimed that the proportion...Ch. 10 - Use the data sets found in Appendix C to answer...Ch. 10 - "To Breakfast or Not to Breakfast?" by Richard...Ch. 10 - Ten individuals went on a lowfat diet for 12 weeks...Ch. 10 - Use the following information to answer the next...Ch. 10 - Use the following information to answer the next...Ch. 10 - Use the following information to answer the next...Ch. 10 - Use the following information to answer the next...Ch. 10 - A golf instructor is interested in determining if...Ch. 10 - A local cancer support group believes that the...Ch. 10 - A traveler wanted to know if the prices of hotels...Ch. 10 - A politician asked his staff to determine whether...Ch. 10 - 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