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1.86 Height and Reading Ability In elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to read at a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it?

1.86 Height and Reading Ability In elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to read at a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Need problems 1.86 and problem 1.100

3 Q 5 l 4 A Chrome File Edit sp MyRedia X > Solution ME Cocal View History Bookmarks > Solution Section X WP 1.3 41 X Profiles Tab read.wiley.com/books/9781119308843/page/6/section/head-2-6 WP NWP As X O Window Help REVISITING QUESTIONS FROM SECTION 1.1 Exercises 1.82 to 1.84 refer to questions of interest asked in Section 1.1 in which we describe data c W n methods. Indicate whether the data come from an experiment or an observational study. 1.82 "Is there a sprinting gene?" Introduced in Example 1.5 on page 9. 1.83 "Do metal tags on penguins harm them?" Introduced in Data 1.3 on page 10 Answer WP Wiley CX 8,426 1.84 "Are there human pheromones?" Introduced on page 11. Three studies are described; indicate whether each of them is an experiment or an observational study. Exercise X 1.85 Salt on Roads and Accidents Three situations are described at the start of this section, on page 29. In the third bullet, we describe an association between the amount of salt spread on the roads and the number of accidents. Describe a possible confounding variable and explain how it fits the definition of a confounding variable. > Answer ✩✩ O g Update 1.86 Height and Reading Ability In elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to read at a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it? JAN 17 + 1.87 Music Volume and Beer Consumption In 2008, a study was conducted measuring the impact that music volume has on beer consumption. The researchers went into bars, controlled the music volume, and measured how much beer was consumed. The article states that "the sound level of the environmental music was manipulated according to a randomization scheme." It was found that louder music corresponds to more beer consumption. Does this provide evidence that louder music causes people to drink more beer? Why or why not? G 12 7 4. MacBook Pro < > Gabriel T TALL-Protecte Draw Design I S
Transcribed Image Text:3 Q 5 l 4 A Chrome File Edit sp MyRedia X > Solution ME Cocal View History Bookmarks > Solution Section X WP 1.3 41 X Profiles Tab read.wiley.com/books/9781119308843/page/6/section/head-2-6 WP NWP As X O Window Help REVISITING QUESTIONS FROM SECTION 1.1 Exercises 1.82 to 1.84 refer to questions of interest asked in Section 1.1 in which we describe data c W n methods. Indicate whether the data come from an experiment or an observational study. 1.82 "Is there a sprinting gene?" Introduced in Example 1.5 on page 9. 1.83 "Do metal tags on penguins harm them?" Introduced in Data 1.3 on page 10 Answer WP Wiley CX 8,426 1.84 "Are there human pheromones?" Introduced on page 11. Three studies are described; indicate whether each of them is an experiment or an observational study. Exercise X 1.85 Salt on Roads and Accidents Three situations are described at the start of this section, on page 29. In the third bullet, we describe an association between the amount of salt spread on the roads and the number of accidents. Describe a possible confounding variable and explain how it fits the definition of a confounding variable. > Answer ✩✩ O g Update 1.86 Height and Reading Ability In elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to read at a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it? JAN 17 + 1.87 Music Volume and Beer Consumption In 2008, a study was conducted measuring the impact that music volume has on beer consumption. The researchers went into bars, controlled the music volume, and measured how much beer was consumed. The article states that "the sound level of the environmental music was manipulated according to a randomization scheme." It was found that louder music corresponds to more beer consumption. Does this provide evidence that louder music causes people to drink more beer? Why or why not? G 12 7 4. MacBook Pro < > Gabriel T TALL-Protecte Draw Design I S
3 Q 5 l 4 A Chrome File Edit sp MyRedia X > Solution ME Cocal View History Bookmarks > Solution Section X WP 1.3 41 X Profiles Tab read.wiley.com/books/9781119308843/page/6/section/head-2-6 WP NWP As X O Window Help REVISITING QUESTIONS FROM SECTION 1.1 Exercises 1.82 to 1.84 refer to questions of interest asked in Section 1.1 in which we describe data c W n methods. Indicate whether the data come from an experiment or an observational study. 1.82 "Is there a sprinting gene?" Introduced in Example 1.5 on page 9. 1.83 "Do metal tags on penguins harm them?" Introduced in Data 1.3 on page 10 Answer WP Wiley CX 8,426 1.84 "Are there human pheromones?" Introduced on page 11. Three studies are described; indicate whether each of them is an experiment or an observational study. Exercise X 1.85 Salt on Roads and Accidents Three situations are described at the start of this section, on page 29. In the third bullet, we describe an association between the amount of salt spread on the roads and the number of accidents. Describe a possible confounding variable and explain how it fits the definition of a confounding variable. > Answer ✩✩ O g Update 1.86 Height and Reading Ability In elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to read at a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it? JAN 17 + 1.87 Music Volume and Beer Consumption In 2008, a study was conducted measuring the impact that music volume has on beer consumption. The researchers went into bars, controlled the music volume, and measured how much beer was consumed. The article states that "the sound level of the environmental music was manipulated according to a randomization scheme." It was found that louder music corresponds to more beer consumption. Does this provide evidence that louder music causes people to drink more beer? Why or why not? G 12 7 4. MacBook Pro < > Gabriel T TALL-Protecte Draw Design I S
Transcribed Image Text:3 Q 5 l 4 A Chrome File Edit sp MyRedia X > Solution ME Cocal View History Bookmarks > Solution Section X WP 1.3 41 X Profiles Tab read.wiley.com/books/9781119308843/page/6/section/head-2-6 WP NWP As X O Window Help REVISITING QUESTIONS FROM SECTION 1.1 Exercises 1.82 to 1.84 refer to questions of interest asked in Section 1.1 in which we describe data c W n methods. Indicate whether the data come from an experiment or an observational study. 1.82 "Is there a sprinting gene?" Introduced in Example 1.5 on page 9. 1.83 "Do metal tags on penguins harm them?" Introduced in Data 1.3 on page 10 Answer WP Wiley CX 8,426 1.84 "Are there human pheromones?" Introduced on page 11. Three studies are described; indicate whether each of them is an experiment or an observational study. Exercise X 1.85 Salt on Roads and Accidents Three situations are described at the start of this section, on page 29. In the third bullet, we describe an association between the amount of salt spread on the roads and the number of accidents. Describe a possible confounding variable and explain how it fits the definition of a confounding variable. > Answer ✩✩ O g Update 1.86 Height and Reading Ability In elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to read at a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it? JAN 17 + 1.87 Music Volume and Beer Consumption In 2008, a study was conducted measuring the impact that music volume has on beer consumption. The researchers went into bars, controlled the music volume, and measured how much beer was consumed. The article states that "the sound level of the environmental music was manipulated according to a randomization scheme." It was found that louder music corresponds to more beer consumption. Does this provide evidence that louder music causes people to drink more beer? Why or why not? G 12 7 4. MacBook Pro < > Gabriel T TALL-Protecte Draw Design I S
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