If you have a ND with mean 100 and standeard deviation 10. Find P(80
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Q: Given a sample with a mean of 57 and a standard deviation of 14, find x such that Pr(X > x) = 0.813
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Q: A score that is 12 points below the mean corresponds to a z-score of z= -1.50. What is the standard…
A: Given that, A score that is 12 points below the mean corresponds to a z-score of z= -1.50.
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A: Given, X_bar = 2.951 s = 0.573 z_score = -0.720
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A: It is not known whether the distribution of the score is symmetric or not. Hence ,we cant use…
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Q: mean of 57 and a standard deviation of 14, find x such that Pr(X > x) = 0.184.
A: Given a sample with a mean of 57 and a standard deviation of 14. i.e. X~N(µ=57, σ2=142)
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Q: Assume that z scores are normally distributed with a mean 0 and a standard deviation of 1. If Pl - b…
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A: Solution: Note: Hello! As you have posted 2 different questions, we are answering the first question…
Q: For a population, a deviation score is computed as X – σ.
A: What is Deviation score ? Deviation score is basically a degree of score from which a raw score is…
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Q: If the coefficient of variation is 1% and the mean is 3.2, determine standard deviation (to four…
A: We have given that Mean(x̅) = 3.2 CV = 0.01
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A: Given Information: Both sets of values have an average of 13. To check if set A's standard deviation…
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A: Given n=32 Mean =2 Standard deviation=1
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Q: Suppose X, the grade on a midterm exam, is normally distributed with mean 80 and standard deviation…
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A: Let the standard deviation be σ=8 and the sample size be n=4 (which is n>1).
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Q: The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Using Chebyshev’s…
A: Here, The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Chebyshev’s…
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Q: Q.3 Assume that the heights of men are normally distributed with a standard deviation of 2.5 inches.…
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Q: Suppose the mean and standard deviation of the GPAs at school are Xbar = 1.487; and s = 1.332…
A: Given: Let X be the random variable denoting the GPA of every student. and GPAs are normally…
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A: It is given that the mean is 20 and the standard deviation is 4.
Q: A population of scores has a mean of μ X = 56. Within this population, a value of X = 68 corresponds…
A: Given: Population mean, μX=56 Observed Value, x = 68 Standardized Normal Value, z = 2.00
Q: Find the z-score when x is 5, mean equals 7, and standard deviation 3.
A: Solution: Let X be the random variable. Then, the z-score is calculated by using the formula
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A: a.
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Q: The data set has mean 30 and standard deviation 4. Approximately what percentage of the observations…
A: The provided information are: Population mean (µ) = 30 Population standard deviation (σ) = 4
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Q: A data set has a mean of x̅= 6.8 and a standard deviation of 1.9. Find the z- score for each of the…
A: Given: mean of data x¯=6.8 Standard deviation is σ=1.9 Formula used: Here we shall use the formula…
Q: The data set has mean 15 and standard deviation 2. Approximately what percentage of the observations…
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Q: Find P(11<X<15) If X is normally distributed with a mean of 14 and a standard deviation of 2?
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Q: A set of data with a mean of 45 and a standard deviation of 8.3 is n Find each value, given its…
A: A mean is 45 with standard deviation 8.3 normally distributed. μ=45σ=8.3
Q: Suppose the mean and standard deviation of the GPAs at school are Xbar = 1.654; and s = -0.562…
A: Standard deviation is denoted by s and it can never be negative. The question is solved by taking s…
Q: Given that the mean μ=20 and the standard deviation σ=4, find P (x<25)
A: Given that. X~N( μ , ?2 ) μ = 20 , ? = 4 Z-score =( x - μ )/?
Q: given distribution has a population mean, μ, of 116 and a population standard deviation, σ, of 11.…
A: Here we want to calculate z score from the given information.
Q: Suppose that, for a certain exam, a teacher grades on a curve. It is known that the mean is 70 and…
A: Solve
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