Math Homework

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1. Consider a normal population with µ = 25 and σ = 7.0. (A)
1. Consider a normal population with µ = 25 and σ = 7.0. (A) Calculate the standard score for a value x of 22. (B) Calculate the standard score for a randomly selected sample of 30 with = 22. (C) Expl… read more
Scott
Master's Degree
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1. Explain the following statement, when drawing a random
1. Explain the following statement, when drawing a random sample from a population, the sample's mean and standard deviation will most likely be different than the population M and SD. 2. One way to d… read more
SusanAthena
Master's Degree
Master's Degree
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Two samples are drawn independently, one from each of two normally
Two samples are drawn independently, one from each of two normally distributed populations (labelled 1 and 2) with means µ1 and µ2 . The sample from population 1 is of size 16 and has mean 16.2 and st… read more
Chirag
Master's Degree
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A simple random sample of size n is drawn from a population
A simple random sample of size n is drawn from a population whose population standard deviation is known to be 5.7. The sample mean is determined to be 41.9. Use this information to answer the followi… read more
Scott
Master's Degree
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A random sample of size n is to be drawn from a population
A random sample of size n is to be drawn from a population with a mean =500 and sd= 100. What sample size would be necessary to ensure a standard error of 25?… read more
Scott
Master's Degree
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A random sample of size 70 is taken from a population that
A random sample of size 70 is taken from a population that has a variance of 49. The sample mean is 90.4. What is the point estimate of µ? Construct a 94% confidence interval for µ. Round your answers… read more
Scott
Master's Degree
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In a normal distribution with mu 25 and sigma 9, what number
In a normal distribution with mu = 25 and sigma = 9, what number corresponds to z = -2? Let's assume you have taken 100 samples of size 64 each from a normally distributed population. Calculate the st… read more
Scott
Master's Degree
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1. The diameter of ball bearings produced in a manufacturing
1. The diameter of ball bearings produced in a manufacturing process can be explained using a uniform distribution over the interval 6.8 to 8.5 millimeters. The probability that a randomly selected ba… read more
Stevewh
Teacher
Bachelor's Degree
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A random sample of size n is to be drawn from a population
A random sample of size n is to be drawn from a population with µ=500 and sd=100. The sample size that would be necessary to ensure a standard error of 25 is n= ....... . (This is based on the formula… read more
abozer
Bachelor's Degree
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What is the standard of error of the mean for samples of size
What is the standard of error of the mean for samples of size 100 taken from a population whose standard deviation is 3.78? A. 0.378 B. 3.78 C. 37.8 D. 378 The population of all those who took the SAT… read more
Scott
Master's Degree
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1.The diameter of ball bearings produced in a manufacturing
1.The diameter of ball bearings produced in a manufacturing process can be explained using a uniform distribution over the interval 6.5 to 8.5 millimeters. What is the probability that a randomly sele… read more
Stevewh
Teacher
Bachelor's Degree
6,427 satisfied customers
1.By measuring the amount of time it takes a component of a
1.By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 4.5 seconds. Answer each of the f… read more
Scott
Master's Degree
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1. A population has a mean of 84, a standard deviation of 16.
1. A population has a mean of 84, a standard deviation of 16. Find the mean and the standard deviation of a sampling distribution of sample means with sample size n=64. 2. the population mean and stan… read more
Stevewh
Teacher
Bachelor's Degree
6,427 satisfied customers
Apopulation has a mean of 84, a standard deviation of 16. Find
Apopulation has a mean of 84, a standard deviation of 16. Find the mean and the standard deviation of a sampling distribution of sample means with sample size n=64. 2. the population mean and standard… read more
rajeevanpillai
Master's Degree
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Lets assume you have taken 100 samples of size 64 each from
Let's assume you have taken 100 samples of size 64 each from a normally distributed population. Calculate the standard deviation of the sample means if the population's variance is 49… read more
Scott
Master's Degree
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1.A simple random sample of size n is drawn from a population
1.A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is 50 and the sample standard deviation, s, is 8. Construct a 98% confidence interval ab… read more
R.R. Jha
Bachelor's Degree
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1) 99% confidence interval estimate for a population mean was
1) 99% confidence interval estimate for a population mean was computed to be (32.6 to 46.0). Determine the mean of the sample, which was used to determine the interval estimate (show all work). 2) stu… read more
R.R. Jha
Bachelor's Degree
4,604 satisfied customers
You have taken 100 samples of size 64 each from a normally
You have taken 100 samples of size 64 each from a normally distributed population. Calculate the standard deviation of the sample means if the populations variance is 49.… read more
Scott
Master's Degree
16,043 satisfied customers
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