Question 1: A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards...

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Question 1:
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average​ MPG, Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
StatCrunch Data Setopens in a new tab
​*The same data set is used for all questions in this project.
Question content area bottom
Part 1
Which of the following more closely describes the method of data collection​ used?
Observational study
Controlled experiment
Also Briefly explain your reasoning in the box below.
Question 2:
Examine the StatCrunch data set and then define each of the following variables as qualitative or quantitative. If the variable is​ qualitative, indicate if it is nominal or ordinal. If it is​ quantitative, indicate whether it is interval or ratio and whether it is discrete or continuous.
Variable​ A: Vehicle type
Variable​ B: Vehicle weight
Variable​ C: Average MPG
Variable​ D: “Meets cu
ent​ standards” or​ “Does not meet cu
ent​ standards” classification
​*Below is the same description and data det for all questions in this project
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average​ MPG, Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
Question 3:
After creating the histogram, be sure to save the image as a .jpg or .png? file, then click? "Show Work" and use the? "Insert Image" button to upload and save your histogram. The copy/paste function in StatCrunch does not work.
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average​ MPG, Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
Using​ StatCrunch, Excel, or the web applets in the​ classroom, create a histogram of the​ "Average MPG"​ data, setting your bin width equal to three.
From your visual​ analysis, describe the shape and center of the distribution. Select the co
ect choice below and fill in the answer box to complete your choice​ (type a whole​ number). Then upload an image of your histogram by clicking​ "Show Work" at the bottom of the page.
A.
The distribution is bimodal with the typical Average MPG around
enter your response here
.
B.
The distribution is roughly symmetric and unimodal with the typical Average MPG around
enter your response here
.
C.
The distribution is​ multi-modal with the typical Average MPG around
enter your response here
.
Include the histogram image as part of your answer.
Save the image as a .jpg or .png​ file, then click​ "Show Work" and use the​ "Insert Image" button to upload and save your histogram.
Question 4:
Based upon your visual analysis of the​ "Average MPG"​ histogram, what is the most appropriate measure of center and variation to calculate and​ interpret?
​*Below is the same description and data set for all questions in this project
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average​ MPG, Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
StatCrunch Data Set
The mean and Interquartile Range
The mean and standard deviation
The median and Interquartile Range
The median and standard deviation
Question 5:
What was the mean​ "Average MPG" for these 750​ vehicles?
​*Below is the same description and data set used for all questions in this project.
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average
MPG​,
Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
StatCrunch Data Set
The mean​ "Average MPG" is
enter your response here

MPG
​(Round to two decimal places as​ needed.)
Question 6:
What was the standard deviation of the​ "Average MPG" for these 750​ vehicles?
​*Below is the same description and data set used for all questions in this project.
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average​ MPG, Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
StatCrunch Data Set
The standard deviation is
enter your response here

MPG
​(Round to two decimal places as ​needed.)
Question 7:
What was the median​ "Average MPG" for these 750​ vehicles?
​*Below is the same description and data set used for all questions in this project.
A federal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile​ manufacturers, and​ consumers, are highly interested in what the​ agency's findings and determinations will be as this will affect every vehicle in the United States. The federal government agency is very interested in the relationship between the weight of a vehicle and the​ vehicle's fuel economy​ (average miles per gallon​ (MPG)). Specifically, the agency is concerned that if the cu
ent trend of automobile manufacturers producing heavier new vehicles continues that its fuel economy targets will not be met. The​ agency's research department recently collected data for analysis in order to support the​ agency's upcoming discussion with industry regarding its proposed 2030 fuel economy standards. The average MPG from a random sample of 750 vehicles was recently calculated by the agency. The research division also collected the vehicle weight of these 750 randomly sampled vehicles. The Vehicle​ Number, Type, Vehicle​ Weight, Average​ MPG, Fuel Tank Size​ (Gallons), Engine Size​ (Liters), and Meet or Not Meet Cu
ent Standards data were collected for these 750 vehicles.
StatCrunch Data Setopens in a new ta
The median​ "Average MPG" is
enter your response here

MPG
​(Round to two decimal places as ​needed.)
Question 8:
What was the interquartile range of the​ "Average MPG" for these 750​ vehicles?
​*Below is the same description and data set used for all questions in this project.
A federal government
Answered 1 days AfterMar 30, 2022

Answer To : Question 1: A federal government agency that is responsible for setting vehicle fuel economy...

Bikash answered on Mar 31 2022
26 Votes
Answer 1
Observational study more closely describes the method of collecting data because under con
trolled experiments there are 2 groups created on which the experiments are done. Here there are no experiments performed as it is mostly observational study.
Answer 2:
Variable​ A: Vehicle type – qualitative - nominal
Variable​ B: Vehicle weight – quantitative- ratio - continuous
Variable​ C: Average MPG - quantitative- ratio - continuous
Variable​ D: “Meets...
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