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An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An...
please answer all questions & the questions from the drop down menu An ethanol railroad tariff...
please answer all questions & the questions from the drop
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An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An agricultural association publishes tariff rates for railroad-car shipments of ethanol. Assuming that the standard deviation of such tariff rates is $1150, determine the probability that the mean tariff rate of 500 randomly selected railroad-car shipments of ethanol will be within $90 of the mean tariff rate of all railroad-car shipments of ethanol....
Data on salaries in the public school system are published annually by a teachers' association. The...
Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of public) classroom teachers is 557.7 thousand. Assume a standard deviation of $8.4 thousand. Complete parts (a) through (e) below a. Determine the sampling distribution of the sample mean for samples of size 64. The mean of the sample mean is Hy = $(Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is =$(Type...
Question Hep * A pharmaceutical company receives large shipments of aspirin tablets. The acceptance batch if...
Question Hep * A pharmaceutical company receives large shipments of aspirin tablets. The acceptance batch if there is only one or none that doesnt meet the required specifications If one shipment of 7000 aspirin tablets probability that this whole shipment will be sampling plan is to randomly select and test 46 tablets, then accept the whole C actually has a 6% rate of defects, what is the or will many be rejected? The probability that this whole shipment will be...
d The f te om Teachers is 553 thousand Data on alles in the public school...
d The f te om Teachers is 553 thousand Data on alles in the public school systems are published by a bran parts (a) through ) below a. Determine the sampling distribution of the sample mean for sample of The mean of the sample meanis 5 (Type an integradacina De S standard of Care ound) The standard deviation of the sample meanis, S (Type an integradecimal Do not found) b. Determine the sampling abution of the sam e for samples...
D Question 39 1 pts Use the information below to answer the next 2 questions. Assume...
D Question 39 1 pts Use the information below to answer the next 2 questions. Assume that females have pulse rates that are normally distributed with a mean of u = 73.0 beats per minute and a standard deviation of o- 12.5 beats per minute. a) If 1 adult female is randomly selected, find the probability that her pulse rate is less than 80 beats per minute. The probability is (Round to four decimal places as needed.) b) If 25...
5.4.1 Question Help A population has a mean = 141 and a standard deviation o =...
5.4.1 Question Help A population has a mean = 141 and a standard deviation o = 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 40. The mean is :-), and the standard deviation is 0;=0 (Round to three decimal places as needed.) 5.4.2 Question Help A population has a meanu - 74 and a standard deviation = 8. Find the mean and standard deviation of a sampling distribution of...
hi there, having trouble with stats homework In a random sample of 22 people, the mean...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
The waiting times between a subway departure schedule and the arrival of a passenger are uniformly...
The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between and 7 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 3 25 minutes Find the probability that a randomly selected passenger has a waiting time greater than 3 25 minutes (Simplify your answer. Round to three decimal places as needed) 6.2.31 Question Help E Question Help The lengths of pregnancies are normally distributed with a...
9:38 1 LTE Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bll Alther.t Suppose a...
9:38 1 LTE Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bll Alther.t Suppose a small group of 18 Allen's hummingbirds has been under study in Arizona. The average weight for these birds is x-3.15 grams Based on previous studies, we can assume that the weights of Allen's hummingbirds have a normal distribution, with σ-0.38 gram. (a) Find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?...
The reading speed of second grade students in a large city is approximately normal, with a...
The reading speed of second grade students in a large city is approximately normal, with a mean of 91 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f). (a) What is the probability a randomly selected student in the city will read more than 96 words per minute? The probability is nothing. (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer...
please answer all questions & the questions from the drop
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An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An agricultural association publishes tariff rates for railroad-car shipments of ethanol. Assuming that the standard deviation of such tariff rates is $1150, determine the probability that the mean tariff rate of 500 randomly selected railroad-car shipments of ethanol will be within $90 of the mean tariff rate of all railroad-car shipments of ethanol....
Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of public) classroom teachers is 557.7 thousand. Assume a standard deviation of $8.4 thousand. Complete parts (a) through (e) below a. Determine the sampling distribution of the sample mean for samples of size 64. The mean of the sample mean is Hy = $(Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is =$(Type...
Question Hep * A pharmaceutical company receives large shipments of aspirin tablets. The acceptance batch if there is only one or none that doesnt meet the required specifications If one shipment of 7000 aspirin tablets probability that this whole shipment will be sampling plan is to randomly select and test 46 tablets, then accept the whole C actually has a 6% rate of defects, what is the or will many be rejected? The probability that this whole shipment will be...
d The f te om Teachers is 553 thousand Data on alles in the public school systems are published by a bran parts (a) through ) below a. Determine the sampling distribution of the sample mean for sample of The mean of the sample meanis 5 (Type an integradacina De S standard of Care ound) The standard deviation of the sample meanis, S (Type an integradecimal Do not found) b. Determine the sampling abution of the sam e for samples...
D Question 39 1 pts Use the information below to answer the next 2 questions. Assume that females have pulse rates that are normally distributed with a mean of u = 73.0 beats per minute and a standard deviation of o- 12.5 beats per minute. a) If 1 adult female is randomly selected, find the probability that her pulse rate is less than 80 beats per minute. The probability is (Round to four decimal places as needed.) b) If 25...
5.4.1 Question Help A population has a mean = 141 and a standard deviation o = 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 40. The mean is :-), and the standard deviation is 0;=0 (Round to three decimal places as needed.) 5.4.2 Question Help A population has a meanu - 74 and a standard deviation = 8. Find the mean and standard deviation of a sampling distribution of...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between and 7 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 3 25 minutes Find the probability that a randomly selected passenger has a waiting time greater than 3 25 minutes (Simplify your answer. Round to three decimal places as needed) 6.2.31 Question Help E Question Help The lengths of pregnancies are normally distributed with a...
9:38 1 LTE Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bll Alther.t Suppose a small group of 18 Allen's hummingbirds has been under study in Arizona. The average weight for these birds is x-3.15 grams Based on previous studies, we can assume that the weights of Allen's hummingbirds have a normal distribution, with σ-0.38 gram. (a) Find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?...
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