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IT Department of an electronic retail company found a new computer virus, which attacks only software of smart microwave ovens made by the company. The Sales Department could call back a few batches of ovens and send them to IT guys for testing. Testing indicated version differences: Approximately 10% of the sample of last models were infected, approximately 35% of the sample of one-year-old models were infected, and approximately 50% of the sample of three-year-old models were infected.
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A scientist collects data from many people to determine how the age and weight are related. How the data is collected determines whether the variables are quantitative or categorical. Describe how the information might be recorded if we regard both variables as categorical.
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Hybrid electric vehicles is a type of a hybrid vehicle and an electric vehicle that combines the conventional internal combustion engine propulsion system with the electric propulsion system. One study of 4250 car owners in Utah found that 14% had a hybrid car. Besides, the second study measured average gas mileage per gallon in a city and on a highway. Finally, the third study measured the maximum distance without refuel or recharging. In each of three studies, identify the variables and whether each variable is quantitative or categorical.
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In one study, a water sample was taken from various lakes. The data indicate that as the concentration of a large group of unicellular microorganisms in the lake water goes up, the fertility level of fish in the lake goes down. The group of unicellular microorganisms level is measured in parts per trillion (ppt) and the fertility level is recorded as the percent of eggs fertilized.
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New studies suggest that experiences of parents can affect future children: Early life experiences of parents appear to cause permanent changes in sperm and eggs. In one study, some male rats were fed a high-fat diet with 43% of calories from fat with some drops of alcohol in the drinking water, while others were fed a normal healthy rat diet. Not surprising, the rats fed the high-fat food with alcohol were far more likely to develop diabetes than the rats on the normal-diet. What surprised the scientists was that the kids of these rats were also far more likely to develop diabetes than the kids of rats fed healthy diets. None of the kids and none of the mothers ate a high-fat diet with alcohol and fathers did not have any contact with kids. The high-fat diet with alcohol of the fathers appeared to cause negative effects for their kids.
Describe the variables and indicate whether each variable is quantitative or categorical, and indicate the explanatory and response variables. Select the correct variables below.
Q6
The dataset below contains the countries that won the FIFA World Cup more than anybody else.
Brazil – 5 times (1958, 1962, 1970, 1994, 2002) – never won the home World Cup.
Germany – 4 times (1954, 1974, 1990, 2014) – won the home World Cup.
Italy – 4 times (1934, 1938, 1982, 2006) – won the home World Cup.
How many cases are there in this dataset? What are the cases? How many variables are there in this dataset? What are the variables?
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Most Popular Content
5 pages
F18 Signature Assignment Final
The purpose of the assignment is to give you experience critically examining a peer-reviewed journal article. This critiqu ...
F18 Signature Assignment Final
The purpose of the assignment is to give you experience critically examining a peer-reviewed journal article. This critique will focus primarily on ...
UCLA Categorical Vs Quantitative Data Statistics Exam Practice
Q1
IT Department of an electronic retail company found a new computer virus, which attacks only software of smart microwav ...
UCLA Categorical Vs Quantitative Data Statistics Exam Practice
Q1
IT Department of an electronic retail company found a new computer virus, which attacks only software of smart microwave ovens made by the company. The Sales Department could call back a few batches of ovens and send them to IT guys for testing. Testing indicated version differences: Approximately 10% of the sample of last models were infected, approximately 35% of the sample of one-year-old models were infected, and approximately 50% of the sample of three-year-old models were infected.
Describe the variables and indicate whether each variable is quantitative or categorical.
Q2
A scientist collects data from many people to determine how the age and weight are related. How the data is collected determines whether the variables are quantitative or categorical. Describe how the information might be recorded if we regard both variables as categorical.
Q3
Hybrid electric vehicles is a type of a hybrid vehicle and an electric vehicle that combines the conventional internal combustion engine propulsion system with the electric propulsion system. One study of 4250 car owners in Utah found that 14% had a hybrid car. Besides, the second study measured average gas mileage per gallon in a city and on a highway. Finally, the third study measured the maximum distance without refuel or recharging. In each of three studies, identify the variables and whether each variable is quantitative or categorical.
Q4
In one study, a water sample was taken from various lakes. The data indicate that as the concentration of a large group of unicellular microorganisms in the lake water goes up, the fertility level of fish in the lake goes down. The group of unicellular microorganisms level is measured in parts per trillion (ppt) and the fertility level is recorded as the percent of eggs fertilized.
Describe the variables and indicate whether each variable is quantitative or categorical.
Q5
New studies suggest that experiences of parents can affect future children: Early life experiences of parents appear to cause permanent changes in sperm and eggs. In one study, some male rats were fed a high-fat diet with 43% of calories from fat with some drops of alcohol in the drinking water, while others were fed a normal healthy rat diet. Not surprising, the rats fed the high-fat food with alcohol were far more likely to develop diabetes than the rats on the normal-diet. What surprised the scientists was that the kids of these rats were also far more likely to develop diabetes than the kids of rats fed healthy diets. None of the kids and none of the mothers ate a high-fat diet with alcohol and fathers did not have any contact with kids. The high-fat diet with alcohol of the fathers appeared to cause negative effects for their kids.
Describe the variables and indicate whether each variable is quantitative or categorical, and indicate the explanatory and response variables. Select the correct variables below.
Q6
The dataset below contains the countries that won the FIFA World Cup more than anybody else.
Brazil – 5 times (1958, 1962, 1970, 1994, 2002) – never won the home World Cup.
Germany – 4 times (1954, 1974, 1990, 2014) – won the home World Cup.
Italy – 4 times (1934, 1938, 1982, 2006) – won the home World Cup.
How many cases are there in this dataset? What are the cases? How many variables are there in this dataset? What are the variables?
Grand Canyon University Statistics Discussion
Statistics is an important component of public health. Explain the relevance of statistics in the planning, implementation ...
Grand Canyon University Statistics Discussion
Statistics is an important component of public health. Explain the relevance of statistics in the planning, implementation and evaluation of a health promotion intervention. How do you envision using statistics in your current or future career?" After completing the course, how has your vision changed regarding the role statistics will have in your current or future career?
4 pages
Week 2 Practice Set
1. List the simple events for each of the following statistical experiments in a sample space. c) One toss of a coin and o ...
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1. List the simple events for each of the following statistical experiments in a sample space. c) One toss of a coin and one roll of a die.
Write a rational expression with at least one $\footnotesize{x}$ in the denominator, algebra homework help
1. Write a rational expression with at least one in the denominator and then analyze it using the following questions:a. ...
Write a rational expression with at least one $\footnotesize{x}$ in the denominator, algebra homework help
1. Write a rational expression with at least one in the denominator and then analyze it using the following questions:a. Set your expression equal to 0. Does this expression have any solutions? Why, or why not?b. Set your expression equal to and graph the equation on a graphing utility or on your calculator. Are there any values that cannot be? Explain.c. How do the numbers and variables in your equation relate to the features of the graph?d. Identify the denominator of your expression; add 6 to the denominator only. How does the graph change?2. The math teacher and cheerleading coach have teamed up to help the students do better on their math test. The cheer coach, using dance move names for the positioning of their arms, yells out polynomial functions with different degrees.For each position the coach yells out, write the shape by describing the position of your left and right arm.a1. Constant Function:a2. Positive Linear Function:a3. Negative Linear Function:a4. Positive Quadratic Function:a5. Negative Quadratic Function:a6. Positive Cubic Function:a7. Negative Cubic Function:a8. Positive Quartic Function:a9. Negative Quartic Function:When it comes time to take the test not only do the students have to describe the shape of the polynomial function, you have to find the number of positive and negative real zeros, including complex. Use the equation below:b. Identify all possible rational zeros.c. How many possible positive real zeros are there? How many possible negative real zeros? How many possible complex zeros?d. Graph the polynomial to approximate the zeros. What are the rational zeros? Use synthetic division to verify these are correct.e. Write the polynomial in factor form.f. What are the complex zeros?
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