For a population with a mean of u = 60 and a standard deviation of o = 4, a score of X = 56 corresponds to a z-score of z = -0.50. O True False

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(0…

A: The mean is 0 and the standard deviation is 1.

Q: What is the mean of a distribution that has a standard deviation of 16.5 if a PERFORMANCE value of…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: A score that is 12 points below the mean corresponds to a z-score of z =-1.50. What is the standard…

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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.

Q: A variable is normally distributed with a hypothesized population mean of 53 and a standard…

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Q: 15. For a population with a mean of p= 45, a score of X 54 corresponds to z = 1.50. What is the…

A: The population standard deviation is obtained below: From the given information, the value of mean…

Q: A given distribution has a population mean, μ, of 131 and a population standard deviation, σ, of 14.…

A: Given information Mean = 131 Standard deviation = 14

Q: For a sample with mean M=80,  a score of X=88 corresponds to z=2. What is the standard deviation?

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Q: For a population with a standard deviation of 6, what is the z score corresponding to a score that…

A: We are given that,Standard deviation = σ = 6And a score that is 12 points above the mean

Q: A z-score of −1 tells us that a score fell one standard deviation below the mean in a group of…

A: Empirical rule: For a normal distribution, the approximate values that fall in the specified…

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: A normal population has a mean of 20.0 and a standard deviation of 4.0. Compute the z value…

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Q: In a population with a mean of µ = 30 and a standard deviation of σ = 5, a score of X = 18 would be…

A: Given that  μ=30 , σ=5 , X=18

Q: Suppose a company produces lightbulbs with a mean lifetime of 1000 hours and a standard deviation of…

A: we have to find z score

Q: When a population is small, it is not practical to determine its mean and standard deviation by…

A: Farmula used

Q: . For a population with a mean of µ = 70, a score of X = 64 corresponds to z = -1.50. What is the…

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Q: A population has a mean of 50 and a standard deviation of 20. Would a score of x=70 be considered an…

A: The mean and standard deviation are 50 and 20.

Q: A given distribution has a population mean, μ, of 117 and a population standard deviation, σ, of 6.…

A: Given data, Mean (μ)=117 sd(σ)=6 If x=172 z=?

Q: A sample of n = 20 scores has a mean of M = 32 and a standard deviation of s = 6. In this sample,…

A: We have to find z score for x= 28....

Q: For a population with a standard deviation of o = 12, a score of X = 44 corresponds to z = -0.50.…

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Q: A score that is 9 points above the mean corresponds to a z-score of z = 1.50. What is the population…

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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: If  X  is a normal variate with mean 300 and standard deviation 15, the Z value associated with X=…

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Q: For a population with a standard deviation of  sigma =12, a score of x=44 corresponds to z= -0.5.50.…

A: It is given that sigma is 12 and score, x is 44. Assuming that the z-score is –0.550. (Since it is…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(z…

A: GivenMean(μ)=0standard deviation(σ)=1

Q: At one college, GPA's are normally distributed with a mean of 3 and a standard deviation of 0.6.…

A: Let GPA's at college = X X follows normal distribution with mean 3 and standard deviation 0.6

Q: A given distribution has a population mean, μ, of 147 and a population standard deviation, σ, of 7.…

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Q: A given distribution has a population mean, μ, of 140 and a population standard deviation, σ, of 7.…

A: From the given information,   Mean = 140 Standard deviation = 7   The objective is to find the…

Q: For a population with  = 150, a raw score of X = 125 corresponds to z = -2.00.  What is the standard…

A: Consider that the mean and standard deviation of a random variable x are µ and σ, respectively.…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, what value…

A: X follows a Normal distribution with mean = 35 and S.D = 7.5 Then z=(x-mean)/SD = (x-35)/7.5…

Q: Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed…

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Q: For a population with population mean 80 and standard deviation10, what is the z-score corresponding…

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Q: As the sample size (n) increases, the standard deviation of x from that sample decreases, this…

A: Hello! As you have posted 3 different questions, we are answering the first question (8). In case…

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 9.…

A: Solution: Let X be the random variable. From the given information, X has a population mean µ=144…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, what value…

A: From the given information, normal distribution with population mean as 35 and standard deviation as…

Q: A given distribution has a population mean, µ, of 110 and a population standard deviation, o, of 15.…

A: The population mean is = 110 And the SD = 15 The value of X is 140

Q: For a population with mean 80 and standard deviation 10, what is the X value corresponding to z =…

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Q: For a population with a standard deviation of σ = 14, a score of X — 24 corresponds to z — 0.50.…

A: Given that, The population standard deviation (σ ) is 14 The score of X is, 24 The z-score is,…

Q: Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(z…

A: The normal distribution is the most useful theoretical distribution for continuous variable. For the…

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: A given distribution has a population mean, μ, of 142 and a population standard deviation, σ, of 10.…

A: It is given that the mean (µ) is 142 and the standard deviation (σ) is 10 and score, x is 110.

Q: For a population with mean of 50 and standard deviation of 8, what is the z-score that corresponds…

A: Given that , mean = μ = 50 standard deviation = σ = 8 x = 46

Q: For a population with a mean of ? = 80 and a standard deviation of ? = 12, a score of X = 77…

A: Given : population mean = 80 standard deviation = 12 score of X = 77

Q: A population has a mean of u=50 and a standard deviation of 0=10. If 3 points were added to every…

A: The properties of mean are:E(X + a) = E( X ) + a * E(X+a)=E(X)+aE(aX)=aE(X)The property of variance…

Q: A sample of n = 20 scores has a mean of M = 45 and a standard deviation of s = 6.  In this sample,…

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Q: A distribution has a population mean of 15 and a population standard deviation of 4. If X is a…

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Q: Under what circumstances would a score that is 15 points above the mean be considered an extreme…

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Q: On an exam with a standard deviation of σ = 6, Tom’s score of X = 54 corresponds to a z-score of z =…

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Q: For a population with a standard deviation of σ = 12, a score of X = 44 corresponds to z = −0.50.…

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