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105.06 is 15% of what number?
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STAT Assignment
Solve the following questions:
Find the mean, mod, median, and standard deviation of the following data. And B ...
STAT Assignment
Solve the following questions:
Find the mean, mod, median, and standard deviation of the following data. And Based on these results, check whether the value of 10 is usual?
5, 6, 7, 8, 9,8,7,8
_______________________________________________________
2. Pre-Employment Drug Screening Results are shown in the following Table:
Positive Test Result
Negative Test Result
Subject Uses Drugs
8
(True Positive)
2
(False Negative)
Subject is not a Drug User
10
(False Positive)
180
(True Negative)
If 1 of the 200 test subjects is randomly selected, find the probability that the subject had a positive test result, given that the subject actually uses drugs. That is,
find (positive test result ? subject uses drugs).
If 1 of the 200 test subjects is randomly selected, find the probability that the subject actually uses drugs, given that he or she had a positive test result. That is,
find ( subject uses drugs ? positive test result ).
___________________________________________________
3. This is observation from previous years about the impact of students working while they are enrolled in classes, due to students too much work, they are spending less time on their classes. First, the observer need to find out, on average, how many hours a week students are working. They know from previous studies that the standard deviation of this variable is about 5 hours. A survey of 200 students provides a sample mean of 7.10 hours worked. What is a 95% confidence interval based on this sample?
Walden University Wk 1 Probability Distributions Affect Decisions Discussion
Imagine if you were offered a job in a different state and a major consideration for you is rent prices (assuming you plan ...
Walden University Wk 1 Probability Distributions Affect Decisions Discussion
Imagine if you were offered a job in a different state and a major consideration for you is rent prices (assuming you planned to rent instead of buy). Your main concerns are the affordability in relation to your income and the location/condition of the property. Perhaps you would look for the cheapest rent possible within a quiet, residential community. Or, you might be willing to spend at little more than average to live in the heart of downtown. As you research the city, you learn that the mean for rents of your preferred home size are $1,300 a month. Many people might base their decision on this number alone, but you—equipped with the knowledge of standard deviation—know there is more to that number.If the most you could afford is $1,100 a month in rent, then a standard deviation of $250 might be good news because the amount you can afford is still within 1 deviation of the mean. With a standard deviation of $75, however, you might be unwilling to make the sacrifices necessary to rent a place that you could afford. Additionally, if you were willing to spend a little more than average to live in a nice place or area, then you could easily find an amazing place with a standard deviation of $100 but might not be able to afford the upgrade with a standard deviation of $300.In this Discussion, you will use the data that you gathered in the Week 1 Discussion to calculate a standard deviation and explain how this concept can affect decision making.Locate the data that you gathered for the Week 1 Discussion.Calculate the sample standard deviation from your cigarette price data in Week 1. Use that (and your sample average and sample size) to calculate the following (assuming a normal distribution):Within what range would you find 90% of cigarette prices in your area?What are the chances that someone in your area would pay 4 dollars or less per pack?What are the chances that someone in your area would pay 10 dollars or less per pack?Week 1 is attached
MATH 114 Liberty University Appliance Power Consumption Worksheet
Project 2 Instructions Please also pay close attention to any additional specifications provided by your professor. Prof ...
MATH 114 Liberty University Appliance Power Consumption Worksheet
Project 2 Instructions Please also pay close attention to any additional specifications provided by your professor. Professors often will clarify their expectations regarding the format and presentation of your submission. Ever wonder how your electricity bill is computed? The following table gives the watts of power that are typically required by several major (and not so major) appliances. (Source: http://www.wholesalesolar.com/solar-information/how-to-save-energy/power-table, with some numbers rounded off for computational convenience.) Table 1: Appliance Central Air Conditioner Water Heater Clothes Dryer Oven Dishwasher Fridge Ceiling Fan LCD TV Watts 9000 5000 4500 4000 2400 2200 220 250 Assume that the number of hours that the aforementioned appliances run during an average day is given in the table below: Table 2: Appliance Central Air Conditioner Water Heater Clothes Dryer Oven Dishwasher Fridge Ceiling Fan LCD TV Hours 5 3 3.5 2 2.5 8 13 6 Add columns to the Project 2 Data spreadsheet that show the following for each appliance: The number of kilowatts of power required by each of these appliances (1 kilowatt = 1000 watts).If the appliance runs the number of hours specified in Table 2, compute the kilowatt-hours (kWh) of energy that each appliance consumes during an average day. Note: kWh are found by multiplying the power of an appliance by the number of hours that it is in use. The number of kilowatt-hours used by each appliance in the entire YEAR.Assuming that electricity costs $0.13 per kWh, find the electricity cost of running each appliance for the entire year.According to the US Energy Information Administration (see “How much coal, natural gas or petroleum is used to generate a kilowatt-hour of electricity” on https://www.eia.gov/tools/faqs/), it requires 0.00052 tons of coal to generate 1 kWh of electricity. Use this conversion to find how much coal would be required to run each of these appliances for a year.The same source also states that 0.00173 barrels of oil will generate 1 kWh of electricity. Like question 5, find how much oil each appliance would consume on an annual basis.Add a “Total” row to the spreadsheet that shows how much electricity is consumed by all 8 appliances combined in the course of a day and of a year. Also, find the cost, the amount of coal that would be required, and the barrels of oil that would be required in order to run all 8 appliances for a year.
5 pages
Essay Test Econ 151
A. Economic cycles, also known as business cycles, are periods of contraction (recession) and expansion (growth) in econom ...
Essay Test Econ 151
A. Economic cycles, also known as business cycles, are periods of contraction (recession) and expansion (growth) in economic activity, production, and ...
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STAT Assignment
Solve the following questions:
Find the mean, mod, median, and standard deviation of the following data. And B ...
STAT Assignment
Solve the following questions:
Find the mean, mod, median, and standard deviation of the following data. And Based on these results, check whether the value of 10 is usual?
5, 6, 7, 8, 9,8,7,8
_______________________________________________________
2. Pre-Employment Drug Screening Results are shown in the following Table:
Positive Test Result
Negative Test Result
Subject Uses Drugs
8
(True Positive)
2
(False Negative)
Subject is not a Drug User
10
(False Positive)
180
(True Negative)
If 1 of the 200 test subjects is randomly selected, find the probability that the subject had a positive test result, given that the subject actually uses drugs. That is,
find (positive test result ? subject uses drugs).
If 1 of the 200 test subjects is randomly selected, find the probability that the subject actually uses drugs, given that he or she had a positive test result. That is,
find ( subject uses drugs ? positive test result ).
___________________________________________________
3. This is observation from previous years about the impact of students working while they are enrolled in classes, due to students too much work, they are spending less time on their classes. First, the observer need to find out, on average, how many hours a week students are working. They know from previous studies that the standard deviation of this variable is about 5 hours. A survey of 200 students provides a sample mean of 7.10 hours worked. What is a 95% confidence interval based on this sample?
Walden University Wk 1 Probability Distributions Affect Decisions Discussion
Imagine if you were offered a job in a different state and a major consideration for you is rent prices (assuming you plan ...
Walden University Wk 1 Probability Distributions Affect Decisions Discussion
Imagine if you were offered a job in a different state and a major consideration for you is rent prices (assuming you planned to rent instead of buy). Your main concerns are the affordability in relation to your income and the location/condition of the property. Perhaps you would look for the cheapest rent possible within a quiet, residential community. Or, you might be willing to spend at little more than average to live in the heart of downtown. As you research the city, you learn that the mean for rents of your preferred home size are $1,300 a month. Many people might base their decision on this number alone, but you—equipped with the knowledge of standard deviation—know there is more to that number.If the most you could afford is $1,100 a month in rent, then a standard deviation of $250 might be good news because the amount you can afford is still within 1 deviation of the mean. With a standard deviation of $75, however, you might be unwilling to make the sacrifices necessary to rent a place that you could afford. Additionally, if you were willing to spend a little more than average to live in a nice place or area, then you could easily find an amazing place with a standard deviation of $100 but might not be able to afford the upgrade with a standard deviation of $300.In this Discussion, you will use the data that you gathered in the Week 1 Discussion to calculate a standard deviation and explain how this concept can affect decision making.Locate the data that you gathered for the Week 1 Discussion.Calculate the sample standard deviation from your cigarette price data in Week 1. Use that (and your sample average and sample size) to calculate the following (assuming a normal distribution):Within what range would you find 90% of cigarette prices in your area?What are the chances that someone in your area would pay 4 dollars or less per pack?What are the chances that someone in your area would pay 10 dollars or less per pack?Week 1 is attached
MATH 114 Liberty University Appliance Power Consumption Worksheet
Project 2 Instructions Please also pay close attention to any additional specifications provided by your professor. Prof ...
MATH 114 Liberty University Appliance Power Consumption Worksheet
Project 2 Instructions Please also pay close attention to any additional specifications provided by your professor. Professors often will clarify their expectations regarding the format and presentation of your submission. Ever wonder how your electricity bill is computed? The following table gives the watts of power that are typically required by several major (and not so major) appliances. (Source: http://www.wholesalesolar.com/solar-information/how-to-save-energy/power-table, with some numbers rounded off for computational convenience.) Table 1: Appliance Central Air Conditioner Water Heater Clothes Dryer Oven Dishwasher Fridge Ceiling Fan LCD TV Watts 9000 5000 4500 4000 2400 2200 220 250 Assume that the number of hours that the aforementioned appliances run during an average day is given in the table below: Table 2: Appliance Central Air Conditioner Water Heater Clothes Dryer Oven Dishwasher Fridge Ceiling Fan LCD TV Hours 5 3 3.5 2 2.5 8 13 6 Add columns to the Project 2 Data spreadsheet that show the following for each appliance: The number of kilowatts of power required by each of these appliances (1 kilowatt = 1000 watts).If the appliance runs the number of hours specified in Table 2, compute the kilowatt-hours (kWh) of energy that each appliance consumes during an average day. Note: kWh are found by multiplying the power of an appliance by the number of hours that it is in use. The number of kilowatt-hours used by each appliance in the entire YEAR.Assuming that electricity costs $0.13 per kWh, find the electricity cost of running each appliance for the entire year.According to the US Energy Information Administration (see “How much coal, natural gas or petroleum is used to generate a kilowatt-hour of electricity” on https://www.eia.gov/tools/faqs/), it requires 0.00052 tons of coal to generate 1 kWh of electricity. Use this conversion to find how much coal would be required to run each of these appliances for a year.The same source also states that 0.00173 barrels of oil will generate 1 kWh of electricity. Like question 5, find how much oil each appliance would consume on an annual basis.Add a “Total” row to the spreadsheet that shows how much electricity is consumed by all 8 appliances combined in the course of a day and of a year. Also, find the cost, the amount of coal that would be required, and the barrels of oil that would be required in order to run all 8 appliances for a year.
5 pages
Essay Test Econ 151
A. Economic cycles, also known as business cycles, are periods of contraction (recession) and expansion (growth) in econom ...
Essay Test Econ 151
A. Economic cycles, also known as business cycles, are periods of contraction (recession) and expansion (growth) in economic activity, production, and ...
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