What is the standard error of x, -x, ? standard deviation of the sampling distribution of x, -x, a. b. difference between the two means C. variance of x,-x, С. d. variance of the sampling distribution of x, -x,

Q: 1)Suppose you drew a random sample,n of 100 from a population and found mean =30, standard deviation…

A: Answer - Suppose you drew a random sample, n = 100 from a population and found mean μ = 30, standard…

Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

A: Given Data: n=100 Mean=80 Variance=144

Q: the random variable X is normally distributed with a mean of 80 and a standard deviation of 10, then…

A: Introduction: Define X as the random variable of interest here. It is given that X has a normal…

Q: If x represents a random variable with mean 118 and standard deviation 35, then the standard…

A: According to the given information, we have Mean = 118 Standard deviation = 35 Sample size = 49

Q: Suppose that average male weight in the US is 175 pounds with a standard deviation of 25 pounds.…

A: It is given that population mean µ=175 pounds, population standard deviation σ=25 pounds. Sample…

Q: x represents a random variable with mean 144 and standard deviation 36, then the standard deviation…

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Q: If x represents a random variable with mean 110 and standard deviation 14, then the standard…

A: If x represents a random variable with mean 110 and standard deviation 14. μ=110σ=14 sample…

Q: From the empirical rule we can deduce that, for any distribution, 95% of the observations fall…

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Q: Suppose that human pulse rates for children over 10 and adults are approximately normally…

A: Note: Please repost remaining subparts as i can author only 3 sub-parts as per my policy. Given…

Q: A random sample of size, n=20 has the mean 20 and standard deviation 5. What is the coefficeint of…

A: Given Information: Sample size (n) = 20 Sample mean (x¯) = 20 Sample standard deviation (s) = 5 To…

Q: For a binomial distribution with n = 15 and p = 0.2, what is the standard deviation of the…

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Q: The number of years of education of self-employed individuals in the United States has a population…

A: Given Data: Population Meanμ=13.6 Population Standard deviationσ=3 n=100   We know that, x¯~ Normal…

Q: What is the probability of getting a sample mean between 500 and 520 if the population mean is 500…

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Q: suppose x has a normal distribution with mean= 18 and standard deviation =13. If you draw ramdom…

A: Given that mean=18 S.D=13 N=5

Q: What is the Mean deviation of the numbers 0.5, 0.8, 1.1, 0.9 and 0.6

A: The data is given by 0.5, 0.8, 1.1, 0.9, 0.6 And the mean of these numbers is Mean = (0.5 + 0.8 +…

Q: The average energy intake of working adults is 1768.8 kcal with a standard deviation of 12 kcal.…

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Q: If x represents a random variable with mean 125 and standard deviation 36, then the standard…

A: For a random sample of 81, X –bar follows normal with mean value of 125 and standard deviation of 4.…

Q: Suppose that the economic growth of a country is normally distributed with mean μ = 8 ppt, and…

A: Given : Economic growth of a country is normally distributed with mean μ = 8  and standard deviation…

Q: The number of years of education of self-employed individuals in the United States has a population…

A: Given that,Mean = 13.6Standard deviation = 3Sample size = 100

Q: The average cost per household of owning a brand new car is 5000. Suppose that we randomly selected…

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Q: Assume the average income of workers in jordan equal 400 JD, a sample of 500 workers are taken and…

A: Given: Average income of workers in jordan = 400 Sample size n=500 sampling error is 10. standard…

Q: If x represents a random variable with mean 137 and standard deviation 35, then the standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: 2. A normal distribution of scores has a mean of 120 and a standard deviation of 20.What score…

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Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

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Q: Suppose x has a normal with mean =20 and standard deviation =12. If you draw a random samples of…

A: Given: x~N(μ,σ)μ=20σ=12

Q: Suppose the total cholesterol levels of all women 20 or older in U.S. have the average of μ=170μ=170…

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Q: Assume that a parent distribution is repeatedly sampled, and the same uncertainty is assigned to…

A: We want to tell you above statement is true or false.

Q: 12. The red blood cell count for a population of adult males can be approximated by a normal…

A: GivenMean(μ)=5.4variance(σ2)=0.16standard deviation(σ)=0.16=0.4

Q: In a large community, 44% of the people have blood type O. Let p be the proportion of people who…

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Q: If the true mean is .9560 with a standard deviation of .0020 what is the sampling distribution of X

A: if the true mean is 0.9560 with a standard deviation of 0.0020 i.e.  μ=0.9560  and σ = 0.0020

Q: The number of years of education of self-employed individuals in the United States has a population…

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Q: The standard deviation of X bar  (standard error of the sample mean) equals the population standard…

A: The sample standard deviation s is equal to the standard deviation of the population σ divided by…

Q: Suppose we have independent observations X1 and X2 from a distribution with mean u and X1+X22…

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Q: Suppose x has a distribution with a mean of 13.9 and a standard deviation of 2.1. Random samples of…

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Q: Suppose weights of running shoes have an unknown distribution with mean 11 and standard deviation 2…

A: The standard deviation from the sample mean distribution is obtained below: From the information,…

Q: Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs.…

A: It is given that the mean is 245.7, the standard deviation is 34.5 and the sample size is 32.

Q: Suppose that the distribution for a random variable x is normal with mean 15 and standard deviation…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: Assume the random variable X is normally distributed with mean 50 and standard deviation of 7.  What…

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Q: What is the standard deviation of a sample of 120 observations, if the variance of the sample 2.56?

A: It is given that the variance of the sample is 2.56.

Q: In general, the standard error of the sampling distribution is __________the standard deviation from…

A: We know that, Standard error is given by, SE= sigma/√n Where sigma is standard deviation and n is…

Q: If a normal distribution has a mean of 15.15 and standard deviation of 3.33, then what proportion of…

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Q: The mean age of the employees at a large corporation is 35.2 years, and the standard deviation is…

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Q: "suppose that a random sample of size 20 is taken from a normal distribution with unknown variance…

A: Given: n=20 μ=Unknownx=10σ2=1Andμ(Posterior)=15σ(Posterior)=0.1

Q: Suppose you have the population 50 and 80 and that their corresponding z-scores are -1 and -2,…

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Q: 1. The scores of individual students on a nationaltest have a normal distribution with mean 18.6 and…

A: (As per bartleby guidelines, for multiple questions asked, only the first question will be solved.…

Q: The mean monthly out-of-pocket cost of prescription drugs for all senior citizens in a city is $370…

A: Solution: Given information: μ=$370 Population Mean of all senior citizens in a cityσ=$80 Population…

Q: Suppose we have the short hand info on a Normal Distribution as N(10,25). What is the population…

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: A random variable is normally distributed with the mean of $1500.00 and standard deviation of $40.…

A: Given,sample size(n)=25mean(μ)=1500standard deviation(σ)=40