Suppose x has a distribution with a mean of 50 and a standard deviation of 36. Random samples of size n = 64 are drawn.

Q: A normally distributed population with unknown variance has a mean of 20. If you took a random…

A: Given,  X is normally distributed with mean μ=20 and variance is unknown. A random sample of size…

Q: A random variable X is normally distributed with a mean of 175 and a standard deviation of 25. Given…

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Q: A population has a standard deviation of 16. If a sample of size 64 is selected from this…

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Q: The population of incomes in a particular community is thought to be highly right-skewed with a mean…

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

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Q: Suppose x has a normal distribution with a population standard deviation of 2.2. If a random sample…

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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: A Normal population has mean μ = 10 and standard deviation σ = 3.  Suppose a random sample of size n…

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Q: If x represents a random variable with mean 117 and standard deviation 40, then the standard…

A: Given : Mean , u = 117  standard deviation, σ = 40

Q: the z- value for a given value x of the random variable X is z= 1.96, and the distribution of X is…

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Q: A random normal variable X has a mean of 15500 and a standard deviation of 1500. Find a value of x…

A: I am sorry, I can not provide a solution on paper. We are strictly instructed to provide a typed…

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A: Given that, mean = 400 standard deviation =  24 n = 144

Q: A sample of n = 16 scores has a standard error of 12. What is the standard deviation of the…

A: Given that, Sample size, n = 16 Standard error = 12

Q: A random sample of n = 4 scores is obtained from a population with a mean of µ = 80 and a standard…

A: Solution: From the given information, n=4, µ=80, σ=10 and M=90.

Q: A sample of n = 49 scores is selected from a normal population with a mean of µ = 60 and a standard…

A: Answer:----.                    Date:----3/10/2021

Q: Suppose the GPAs of all VVC students have an approximately normal distribution with a mean of 2.98…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: if X is normally distributed random variable with a mean of 80 and a standard deviation of 12, then…

A: GivenMean(μ)=80standard deviation(σ)=12

Q: Suppose that y is a random variable having a normal distribution with a mean equal to 250 and a…

A: Solution: It is given that the random variable y follows the normal distribution with mean and…

Q: Suppose a simple random sample of size n=81 is obtained from a population with a mean of 88 and a…

A: Given sample of size n=81 mean=88 standard deviation =27.

Q: For a sample of 40 items from a population for which the standard deviation is σ = 7.4, the sample…

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Q: In a normal distribution with mean 375 and standard deviation 48, how large a sample must be taken…

A: It is an important part of statistics. It is widely used.

Q: For a random variable that is normally distributed, with mean of 80 and standard deviation of 10,…

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Q: A random normal variable X has a mean of 15500 and a standard deviation of 1500. Find a value of x…

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Q: 7. For a population with a standard deviation of σ = 20, how large a sample is necessary to have a…

A: Standard deviation: Standard deviation is defined as the positive square root of Variance. It is…

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 it is known that the mean and the standard deviation for a given population are 65 ar 8,…

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Q: 1. If the standard deviation of the mean for the sampling distribution of random samples of size 36…

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Q: A sample of n=25 scores has a mean of 68. Find the z-score for this sample:   If it was obtained…

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Q: Let the random variable X follow a normal distribution with a mean of 18 and a standard deviation of…

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Q: A sample of size 45 will be drawn from a population with mean 10 and standard deviation 5. Find the…

A: Central Limit Theorem states that if you have a population with mean μ and standard deviation σ and…

Q: Suppose x has a distribution with a mean of 90 and a standard deviation of 27 Random samples of size…

A: Given mean, μ=90 standard deviation, σ= 27 n =36 X ~ N(μ, σ)

Q: A random sample of size 25 from a popúlation gives the sample standard deviation to be 8.5. Test the…

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Q: Assume X is normally distributed with a mean of 10 and a standard deviation of 2.1. Determine

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Q: The average salary for a certain profession is ​$80,000. Assume that the standard deviation of such…

A: We have to find correct answer..

Q: Suppose the standard deviation of the sample mean is equal to 0.6. If a sample of size n=100n=100 is…

A: Given, Sample standard deviation of mean = 0.6 Sample size =100 Population standard deviation is…

Q: From a normally distributed population, we took a simple random sample of 700 students with a mean…

A: Given: n=700, x=640, σ=300 and 1-α=90%. Then,1-α=0.9⇒α=0.1   The value of z at α=0.1 is 1.645.

Q: For random samples of size n = 16 selected from a normal distribution with a mean of µ = 75 and a…

A: sample size: n = 16mean: µ = 75 standard deviation: σ = 20   To find c such that, P( x¯ <c )…

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: For a population with a mean of μ = 75 and a standard deviation of σ = 7, find the z-score…

A: Population mean μ=75, standard deviations σ=7, M=84, n=6

Q: For random samples of size n = 25 selected from a normal distribution with a mean of µ = 50 and a…

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Q: A random normal variable X has a mean of 15500 and a standard deviation of 1500. Find a value of x…

A: Given: μ=15500 and σ=1500 Also, it is given that-PX>x=PZ>z=0.01…

Q: Suppose a population has a mean of 90 and a standard deviation of 28. If a random sample of size 49…

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Q: For a normal distribution curve with a mean of 15 and a standard deviation of 4, which range of the…

A: Let X be the random variable from normal distribution with mean (μ) = 15  and standard deviation (σ)…

Q: In a normal distribution with a mean of 72 and a standard deviation of 12:   What percentage of…

A: Given that , mean = μ = 72 standard deviation = σ = 12

Q: the probability of drawing a sample with a mean of more than $115 is closest to _______.

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Q: Suppose that X is a normal random variable with a mean of μ=10. If we know that Pr[X<46]=Pr[Z<3.00],…

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Q: If X is normally distributed random variable with a standard deviation of 16. Find the mean given…

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Q: A population has a mean of 60 and a standard deviation of 18. A sample of 81 observations will be…

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Q: A researcher wishes to see if the average number of sick days a worker takes per year is greater…

A: Hypotheses:Let µ be the true average number of sick days a worker takes per year. The aim of the…

Q: Suppose X is normally distributed with mean 50 and standard deviation 4, what is P(45 < X < 58) ?…

A: X is normally distributed with mean 50 and standard deviation 4 So, X ~ N(50,42) Therefore, Z =…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.