Suppose you are told that a 95% confidence interval for the average price of a gallon...
Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $2.93 to $4.21. Use the fact that the confidence interval for the mean is in the form x − E to x + E to compute the sample mean and the maximal margin of error E. (Round your answers to two decimal places.)
x = $
E = $
Homework Answers
Add Answer to:
Suppose you are told that a 95% confidence interval for the
average price of a gallon...
Suppose you are told that a 95% confidence interval for the average price of a gallon...
Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $2.91 to $4.40. Use the fact that the confidence interval for the mean is in the form x − E to x + E to compute the sample mean and the maximal margin of error E. (Round your answers to two decimal places.) x = $ E = $
Suppose you are told that a 95% confidence interval for the average price of a gallon...
Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $3.06 to $4.06. Use the fact that the confidence interval for the mean is in the form x − E to x + E to compute the sample mean and the maximal margin of error E. (Round your answers to two decimal places.) x = $ E = $
A 95% confidence interval for the mean price of a gallon of 93 octane gasoline in...
A 95% confidence interval for the mean price of a gallon of 93 octane gasoline in the state of Georgia is found to be $2.60 to $2.78. The best interpretation of this interval is...
The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of...
The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.87. The US EIA updates its estimates of average gas prices on a weekly basis. Assume the standard deviation is $.24 for the price of a gallon of regular gasoline and recommend the appropriate sample size for the US EIA to use if they wish to report each of the following margins of error at 95% confidence. Round up to the...
The U.S. Energy Information Administration (US LIA) reported that the average price for a gallon of...
The U.S. Energy Information Administration (US LIA) reported that the average price for a gallon of regular gasoline is $3.98. The US EI updates its estimates of average gas prices on a weekly basis. Assume the standard deviation is 8.24 for the price of a gallon of regular gasoline and recommend the appropriate sample sire for the US EIA to use if they wish to report each of the following margins of error at 95% confidence. Round up to the...
The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of...
The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is 3. 91 . The US EIA updates its estimates of average gas prices on a weekly basis. Assume the standard deviation is $ .24 for the price of a gallon of regular gasoline and recommend the appropriate sample size for the US EIA to use if they wish to report each of the following margins of error at 95 confidence. Round...
15. (8 points) In August 2012, the national average price for a gallon of regular unleaded gasoli...
15. (8 points) In August 2012, the national average price for a gallon of regular unleaded gasoline was $3.63. The prices for a sample of n-10 gas stations in the state of Illinois were used to create the following bootstrap distribation. Bootstrap Dotplot of ean Originall Sample ร00 Bootstrap Sample 25 3.80 .5 3.90 3.95 4.00 4.05 410 41342 (a) Use the bootstrap standard error and the normal approimation to construct a 90% confidence interval for the mean price of...
An automobile club reported that the average price of regular gasoline in a certain state was...
An automobile club reported that the average price of regular gasoline in a certain state was $2.61 per gallon. The following data show the price per gallon of regular gasoline for 15 randomly selected stations in the state. Complete parts a through c below. 2.64 2.72 2.53 2.65 2.57 2.69 2.62 2.51 2.65 2.63 2.56 2.51 2.66 2.62 2.65 a. Construct a 99% confidence interval to estimate the average price per gallon of gasoline in the state. The 99% confidence...
Confidence Intervals 9. Construct a 95 % confidence interval for the population mean, . In a...
Confidence Intervals 9. Construct a 95 % confidence interval for the population mean, . In a random sample of 32 computers, the mean repair cost was $143 with a sample standard deviation of $35 (Section 6.2) Margin of error, E. <με. Confidence Interval: O Suppose you did some research on repair costs for computers and found that the population standard deviation, a,- $35. Use the normal distribution to construct a 95% confidence interval the population mean, u. Compare the results....
Suppose you are given a 95% confidence interval estimate of monthly income for staff at Texas...
Suppose you are given a 95% confidence interval estimate of monthly income for staff at Texas State. The lower bound of the estimate is $4,950 and upper bound is $7,560. What is the margin of error that was used to compute the interval? A. $1,305 B. 0.4750 C. $2,610 D. $6,255 E. 0.9500
The U.S. Energy Information Administration (US LIA) reported that the average price for a gallon of regular gasoline is $3.98. The US EI updates its estimates of average gas prices on a weekly basis. Assume the standard deviation is 8.24 for the price of a gallon of regular gasoline and recommend the appropriate sample sire for the US EIA to use if they wish to report each of the following margins of error at 95% confidence. Round up to the...
15. (8 points) In August 2012, the national average price for a gallon of regular unleaded gasoline was $3.63. The prices for a sample of n-10 gas stations in the state of Illinois were used to create the following bootstrap distribation. Bootstrap Dotplot of ean Originall Sample ร00 Bootstrap Sample 25 3.80 .5 3.90 3.95 4.00 4.05 410 41342 (a) Use the bootstrap standard error and the normal approimation to construct a 90% confidence interval for the mean price of...
Confidence Intervals 9. Construct a 95 % confidence interval for the population mean, . In a random sample of 32 computers, the mean repair cost was $143 with a sample standard deviation of $35 (Section 6.2) Margin of error, E. <με. Confidence Interval: O Suppose you did some research on repair costs for computers and found that the population standard deviation, a,- $35. Use the normal distribution to construct a 95% confidence interval the population mean, u. Compare the results....
Most questions answered within 3 hours.
-
In 2017, Juan entered into a contract to write a book. The
publisher advanced Juan $50,000,...
asked 12 minutes ago -
Determine the number of kinds of protons in each molecule (w/
respect to NMR spectroscopy). Drawing...
asked 22 minutes ago -
A jeweler whose near point is 68 cm from his eye uses a
magnifying glass as...
asked 20 minutes ago -
A company wants to determine how many units of each of two
products, A and B,...
asked 24 minutes ago -
The blood pressure of a person changes throughout the day.
Suppose the systolic blood pressure of...
asked 33 minutes ago -
A chemistry student desired to study sulfur. Sulfur exhibited
the following characteristics with oxygen:
(a) It...
asked 28 minutes ago -
An Atwood machine is constructed of a solid-disk frictionless
pulley of mass m3 and radius R....
asked 30 minutes ago -
what are the advantages of lanthanum hexaboride over tungsten
filament for electron emission
what is the...
asked 32 minutes ago -
Question 5
Your uncle offers to sell you his vintage Rolls Royce. He
suggests a payment...
asked 37 minutes ago -
Quality grading of beef products as Prime, Choice, Select. What
type of data?
A) ratio
B)...
asked 46 minutes ago -
For the following unbalanced reaction at 0.800
atm and 34.5°C:
MoS2(s) + O2(g) → MoO3(s) +...
asked 53 minutes ago -
When 12 mL of 0.2 M NaOH is added to 25 mL of 0.15 M HCl,...
asked 58 minutes ago