Homework Answers
Solution:
Given that,
= $ 7,200
Explanation:
E = 200,
95% confidence level Z = 1.96
n = (Z*S/E)2
= (1.96*7200/200)2
= 4978.7136
= 4979
5200
Add Answer to:
10. A large company is considering opening a franchise in St. Louis and wants to estimate...
show steps STAT 211 Business Statistics I Q4. (2+5+3=10 pts.) An urban planning group is interested...
show steps
STAT 211 Business Statistics I Q4. (2+5+3=10 pts.) An urban planning group is interested in estimating the difference between the mean household incomes for two neighborhoods in a large area. Independent random samples of households in the neighborhoods provided the following results. Neighborhood 1 Sample size=8 Sample mean=$15700 Sample St. Deviation=$700 Neighborhood 2 Sample size=12 Sample mean $ 14500 Sample St. Deviation=850 a. Find point estimate for the difference between the mean incomes in the two neighborhoods. b....
If a light bulb manufacturing company wants to estimate, with 99% confidence, the mean life of...
If a light bulb manufacturing company wants to estimate, with 99% confidence, the mean life of compact fluorescent light bulbs to within plus/minus 150 hours and also assumes that the population standard deviation is 1100 hours, how many compact fluorescent light bulbs need to be selected? Stats and probability
Cholesterol Contents of Cheese A cheese processing company wants to estimate the mean cholesterol content of...
Cholesterol Contents of Cheese A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of a type of cheese. The estimate must be within 0.75 milligram of the population mean. (a) Determine the minimum sample size required to construct a 95% confidence interval for the population mean. Assume the population standard deviation is 3.10 milligrams. (b) The sample mean is 29 milligrams. Using the minimum sample size with a 95% level of confidence, does it...
A company wants to estimate the mean time (in hours) per week for an adult who...
A company wants to estimate the mean time (in hours) per week for an adult who uses computers at home. Find the minimum sample size needed in order to construct a 97% confidence interval for the mean time of computer usage at home for an adult, to within 0.25 hours. The company assumes σ is 1 hour. 76 O 15 O 97 o 19 O 57
A large company wants to estimate the average amount of money that is owed to it...
A large company wants to estimate the average amount of money that is owed to it by delinquent customers, µ. The mean of this sample is $230 and the standard deviation is $50. Construct a 95% and 99% confidence interval for the population parameter µ. This is the only information given. There is no sample size given.
A large company wants to estimate the average amount of money that is owed to it...
A large company wants to estimate the average amount of money that is owed to it by delinquent customers, µ. The mean of this sample is $230 and the standard deviation is $50. Construct a 95% and 99% confidence interval for the population parameter µ. Only information givin. No sample size. Show by hand step by step.
14. Selecting the sample size to estimate a proportion Aa Aa Standard Normal Mean-0 Standard Deviation-1...
14. Selecting the sample size to estimate a proportion Aa Aa Standard Normal Mean-0 Standard Deviation-1 5000 2500 2500 2 ?? 0.674 0.674 The Council of Economic Advisers is conducting a study to estimate the proportion of U.S. households that are eligible for the earned income tax credit. The project manager wants to estimate the proportion to within 0.03 with 95% confidence, and the project manager believes that p will turn out to be approximately 0.13. A sample size no...
8.1.5 Question Help Determine the 95% confidence interval estimate for the population mean of a normal...
8.1.5 Question Help Determine the 95% confidence interval estimate for the population mean of a normal distribution given n = 100, o = 133, and x = 1,500 The 95% confidence interval for the population mean is from to (Round to two decimal places as needed. Use ascending order.) 8.1.14-T Question Help As a follow-up to a report on gas consumption, a consumer group conducted a study of SUV owners to estimate the mean mileage for their vehicles. A simple...
9.2.41 10 8 based on earlier A doctor wants to estimate the mean HDL cholesterol of...
9.2.41 10 8 based on earlier A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females How many subjects are needed to estimate the mean HDL studies? Suppose the doctor would be content with 95% confidence How does the decrease in confidence affect the sample size required? cholesterol within 2 points with 99% confidence assuming s Click the icon to view a partal table of critical values Partal Critical Value Table A 99% confidence level...
Help Save & A large on-demand, video streaming company is designing a large-scale survey to determine...
Help Save & A large on-demand, video streaming company is designing a large-scale survey to determine the mean amount of time corporate executives watch on-demand television. A small pilot survey of 10 executives indicated that the mean time per week is 13 hours, with a standard deviation of 2.0 hours. The estimate of the mean viewing time should be within one-quarter hour. The 95% level of confidence is to be used. (Use z Distribution Table.) How many executives should be...
show steps
STAT 211 Business Statistics I Q4. (2+5+3=10 pts.) An urban planning group is interested in estimating the difference between the mean household incomes for two neighborhoods in a large area. Independent random samples of households in the neighborhoods provided the following results. Neighborhood 1 Sample size=8 Sample mean=$15700 Sample St. Deviation=$700 Neighborhood 2 Sample size=12 Sample mean $ 14500 Sample St. Deviation=850 a. Find point estimate for the difference between the mean incomes in the two neighborhoods. b....
A company wants to estimate the mean time (in hours) per week for an adult who uses computers at home. Find the minimum sample size needed in order to construct a 97% confidence interval for the mean time of computer usage at home for an adult, to within 0.25 hours. The company assumes σ is 1 hour. 76 O 15 O 97 o 19 O 57
14. Selecting the sample size to estimate a proportion Aa Aa Standard Normal Mean-0 Standard Deviation-1 5000 2500 2500 2 ?? 0.674 0.674 The Council of Economic Advisers is conducting a study to estimate the proportion of U.S. households that are eligible for the earned income tax credit. The project manager wants to estimate the proportion to within 0.03 with 95% confidence, and the project manager believes that p will turn out to be approximately 0.13. A sample size no...
8.1.5 Question Help Determine the 95% confidence interval estimate for the population mean of a normal distribution given n = 100, o = 133, and x = 1,500 The 95% confidence interval for the population mean is from to (Round to two decimal places as needed. Use ascending order.) 8.1.14-T Question Help As a follow-up to a report on gas consumption, a consumer group conducted a study of SUV owners to estimate the mean mileage for their vehicles. A simple...
9.2.41 10 8 based on earlier A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females How many subjects are needed to estimate the mean HDL studies? Suppose the doctor would be content with 95% confidence How does the decrease in confidence affect the sample size required? cholesterol within 2 points with 99% confidence assuming s Click the icon to view a partal table of critical values Partal Critical Value Table A 99% confidence level...
Help Save & A large on-demand, video streaming company is designing a large-scale survey to determine the mean amount of time corporate executives watch on-demand television. A small pilot survey of 10 executives indicated that the mean time per week is 13 hours, with a standard deviation of 2.0 hours. The estimate of the mean viewing time should be within one-quarter hour. The 95% level of confidence is to be used. (Use z Distribution Table.) How many executives should be...
Most questions answered within 3 hours.
-
Little’s Law: Val d’Costa is a world famous ski village in the
French Alps. Because of...
asked 24 minutes ago -
Find the absolute error D for the calculation if A + B/C=D A=
9.4 +/- 0.4...
asked 37 minutes ago -
New Air Heating and Cooling, manufactures furnaces and central
air units. The company pride itself on...
asked 51 minutes ago -
A coach uses a new technique to train gymnasts. Seven
gymnasts were randomly selected and their...
asked 2 hours ago -
While rotating the tires on your car you notice a rock [mass =
0.1 Kg] stuck...
asked 4 hours ago -
Using MARS simulator, write MIPS programs according to
the following scenarios: Receive a positive integer number...
asked 6 hours ago -
An object in front of a concave mirror has a real image that is
11.5 cm...
asked 6 hours ago -
Consider the reaction, C3 H8 + O2 --> CO2 + H2O. How many
moles of O2...
asked 8 hours ago -
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 8 hours ago -
In a study of the accuracy of fast food drive-through orders,
Restaurant A had 257 accurate...
asked 8 hours ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 9 hours ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 9 hours ago