Suppose an analyst wants to use the information on commodity prices introduced in an article “Commodity-...
Suppose an analyst wants to use the information on commodity prices introduced in an article “Commodity- Indexed Debt”(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected.
a). Describe the sampling distribution of the mean price for samples of 81 commodity prices.
b). What is the probability that the mean of the sample will be larger than 84 cents?
c). What is the probability that the mean of the sample will be between 74 and 76 cents?
d). Fifteen percent of the prices are less than what sample mean?
I am stuck on part D particularly. Thank you!
Homework Answers
Add Answer to:
Suppose an analyst wants to use the information on commodity prices introduced in an article “Commodity-...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity-...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity- Indexed Debt"(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected. a). Describe the sampling distribution of the mean price for samples of 81 commodity prices b). What is the probability that the mean of the sample will be larger than 84 cents? c). What...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity-...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity- Indexed Debt"(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected. a). Describe the sampling distribution of the mean price for samples of 81 commodity prices b). What is the probability that the mean of the sample will be larger than 84 cents? c). What...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity-...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity- Indexed Debt"(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected. ar Describe price for samples of 81 commodity b). What is the probability that the mean of the sample wl be larger than 84 cents? c). What is the probability that the mean of...
Insurance companies track life expectancy information to assist in determining the cost of life insurance policies....
Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. The insurance company knows that, last year, the life expectancy of its policy holders was 77 years. They want to know if their clients this year have a longer life expectancy, on average, so the company randomly samples some of the recently paid policies to see if the mean life expectancy of policy holders has increased. The insurance company will only change their premium...
Use the same scales to construct boxplots for the pulse rates of males and females from...
Use the same scales to construct boxplots for the pulse rates of males and females from the accompanying data sets. Use the boxplots to compare the two data sets EFE Click the icon to view the data sets. Determine the boxplot for the men's pulse rate data ОА - X Pulse rates for men and women H Men's Pulse Rates 02 62 70 69 60 00 82 75 75 76 74 Full data set 88 70 84 54 50 5e...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-t...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-test to determine whether the difference between hotel prices is significant at the a 0.01 confidence level Cities Atlanta Boston Chicago Dallas Denver Indianapolis Los Angeles New York City 517 Philadelphia Washington, DC 251 Hyatt Regency prices in dollars Hilton prices in dollars 90 273 204 303 189...
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the...
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the probability distribution, rather than on specific parameters of the population. A) True B) False 2) Nonparametric tests are useful for qualitative data that can be ranked. A) True B) False 3) The sign test provides inferences about the population median rather than the population mean. A) True B) False 4) For a sign test to be valid, a large sample must be selected from...
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the...
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the electronics industry, component parts are commonly shipped from suppliers in large lots. Inspection of a sample of n components can be viewed as the n trials of a binomial experimem. The outcome for each component tested (trialD will be that the component is classified as good or defective defective components in the lot do not exceed 1 %. Suppose a random sample of fiver...
i need help on question 3 to 22 please. Midterm ex review. MATH 101 Use the...
i need help on question 3 to 22 please.
Midterm ex review. MATH 101 Use the following information to answer the next four exercises. The midterm grades on a chemistry exam, graded on a scale of 0 to 100, were: 62, 64, 65, 65, 68, 70, 72, 72, 74, 75, 75, 75, 76,78, 78, 81, 82, 83, 84, 85, 87, 88, 92, 95, 98, 98, 100, 100,740 1. Do you see any outliers in this data? If so, how would...
photos for each question are all in a row (1 point) In the following questions, use...
photos for each question are all in a row
(1 point) In the following questions, use the normal distribution to find a confidence interval for a difference in proportions pu - P2 given the relevant sample results. Give the best point estimate for p. - P2, the margin of error, and the confidence interval. Assume the results come from random samples. Give your answers to 4 decimal places. 300. Use 1. A 80% interval for pı - P2 given that...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity- Indexed Debt"(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected. a). Describe the sampling distribution of the mean price for samples of 81 commodity prices b). What is the probability that the mean of the sample will be larger than 84 cents? c). What...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity- Indexed Debt"(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected. a). Describe the sampling distribution of the mean price for samples of 81 commodity prices b). What is the probability that the mean of the sample will be larger than 84 cents? c). What...
Suppose an analyst wants to use the information on commodity prices introduced in an article "Commodity- Indexed Debt"(Columbia Journal of World Business). These prices have a mean of 75 cents and a standard deviation of 9 cents. A random sample of 81 commodity prices is selected. ar Describe price for samples of 81 commodity b). What is the probability that the mean of the sample wl be larger than 84 cents? c). What is the probability that the mean of...
Use the same scales to construct boxplots for the pulse rates of males and females from the accompanying data sets. Use the boxplots to compare the two data sets EFE Click the icon to view the data sets. Determine the boxplot for the men's pulse rate data ОА - X Pulse rates for men and women H Men's Pulse Rates 02 62 70 69 60 00 82 75 75 76 74 Full data set 88 70 84 54 50 5e...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-test to determine whether the difference between hotel prices is significant at the a 0.01 confidence level Cities Atlanta Boston Chicago Dallas Denver Indianapolis Los Angeles New York City 517 Philadelphia Washington, DC 251 Hyatt Regency prices in dollars Hilton prices in dollars 90 273 204 303 189...
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the probability distribution, rather than on specific parameters of the population. A) True B) False 2) Nonparametric tests are useful for qualitative data that can be ranked. A) True B) False 3) The sign test provides inferences about the population median rather than the population mean. A) True B) False 4) For a sign test to be valid, a large sample must be selected from...
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the electronics industry, component parts are commonly shipped from suppliers in large lots. Inspection of a sample of n components can be viewed as the n trials of a binomial experimem. The outcome for each component tested (trialD will be that the component is classified as good or defective defective components in the lot do not exceed 1 %. Suppose a random sample of fiver...
i need help on question 3 to 22 please.
Midterm ex review. MATH 101 Use the following information to answer the next four exercises. The midterm grades on a chemistry exam, graded on a scale of 0 to 100, were: 62, 64, 65, 65, 68, 70, 72, 72, 74, 75, 75, 75, 76,78, 78, 81, 82, 83, 84, 85, 87, 88, 92, 95, 98, 98, 100, 100,740 1. Do you see any outliers in this data? If so, how would...
photos for each question are all in a row
(1 point) In the following questions, use the normal distribution to find a confidence interval for a difference in proportions pu - P2 given the relevant sample results. Give the best point estimate for p. - P2, the margin of error, and the confidence interval. Assume the results come from random samples. Give your answers to 4 decimal places. 300. Use 1. A 80% interval for pı - P2 given that...
Most questions answered within 3 hours.
-
A speeding car is traveling along a straight road with a
constant speed of 100 km/hour....
asked 1 minute from now -
When 60.1 gg of calcium is reacted with nitrogen gas, 31.7 gg of
calcium nitride is...
asked 2 minutes ago -
The random variable X is exponentially distributed, where X
represents the time it takes for a...
asked 17 minutes ago -
a) Write a verilog module for 1:4 Demultiplexer using verilog
primitives.
b) Design 1-to-4 DEMUX using...
asked 12 minutes ago -
MATLAB
write a MATLAB function (1) output a third-order polynomial
function with the coefficients as the...
asked 25 minutes ago -
A z-score
communicates a raw score’s "relative standing"
under the normal curve in relation to:
asked 33 minutes ago -
An object is vibrating on a spring with the following equation
of motion:
?=(30 ??)cos((2?)/(160)?)
a)...
asked 33 minutes ago -
Vulcan Flyovers offers scenic overflights of Mount St. Helens,
the volcano in Washington State that explosively...
asked 35 minutes ago -
If organizations do not adapt fast enough and move incrementally
from the twentieth-century model to the...
asked 36 minutes ago -
A helium balloon with 2.5L of gas has a gauge pressure of 10,000
Pa. The balloon...
asked 40 minutes ago -
What is responsible for Jupiter's enormous magnetic field?
asked 55 minutes ago -
At the end of the year, a company offered to buy 5,000 units of
a product...
asked 57 minutes ago