A score that is 6 points below the mean corresponds to a z-score of z = -2.00. What is the population standard deviation?

Q: A given distribution has a population mean, μ, of 134 and a population standard deviation, σ, of 7.…

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Q: People with z-scores above 2.5 on an IQ test are sometimes classified as geniuses. If IQ scores have…

A: Given,   People with z-scores above 2.5 on an IQ test are sometimes classified as geniuses. If IQ…

Q: For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50.…

A: For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50.

Q: What z-score would be associated with the value x = 124?

A: Given that Mean = 133 SD = 6 And the value is X = 124

Q: A score that is 9 points above the mean corresponds to a z score of +1. What is the population…

A: As given: A score is 9 points above the mean.  It corresponds to a z score of +1.  It is required…

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 national achievement test is administered annually to 3rd graders. The test has a mean score of 80…

A: A national achievement test is administered annually to 3rd graders. The test has a mean score of 80…

Q: For a population with mean 90 and standard deviation 10, what is the z-score corresponding to X =…

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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 given distribution has a population mean, μ, of 113 and a population standard deviation, σ, of 6.…

A: A given distribution has; a population mean(μ)=113 and a population standard deviation(σ)=6 find…

Q: 1. On a final examination in Mathematics, the mean was 76 and the standard deviation was 5.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A distribution is given as X ~ U(0, 12). What is the theoretical standard deviation?

A: concepts and reasonuniform distribution is a continuous probability distribution.it is defined…

Q: A given distribution has a population mean, μ, of 125 and a population standard deviation, σ, of 14.…

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Q: What is another name for the standard deviation of the variable x? What is the reason for that name?

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Q: What is the corresponding Z score ? Mean is 70, standard deviation is 10 and X= 89

A: We have to find z score.

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 score that is 6 points below the mean correspond. to a z-score of z = -2.00. What is the…

A: The following is the formulae for z-score                       i.e., z=X-μσ Here, X is variable…

Q: A given distribution has a population mean, μ, of 150 and a population standard deviation, σ, of 6.…

A: Distributions are of 2 types, discrete and continuous. A normal distribution is a continuous…

Q: A standardized test of intelligence is scaled so that the mean IQ is 100, and the standard deviation…

A: Given that information  Mean = mu= 100  Standard deviation = s =15  Zscore = (x - mu)/s

Q: A given distribution has a population mean, μ, of 142 and a population standard deviation, σ, of 11.…

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Q: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.…

A: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.

Q: Given a distribution with a mean of 70 and a standard deviation of 62, find a value with a z-score…

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Q: In a particular examination, the mean score is 82 and the standard deviation is 3.7. Wha is the Z-…

A: Given that the mean is 82 and standard deviation is 3.7. That is, μ=82σ=3.7

Q: A score that is 6 points below the mean corresponds to a z-score of z = -1.50. What is the…

A: We have to find population standard deviation from given information. We need to use z score…

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 given distribution has a population mean, μ, of 101 and a population standard deviation, σ, of 15.…

A: Z-score for any Raw score X is given by, Z Score=(X-mu)/sigma Where mu is mean and sigma is standard…

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

A:

Q: A given distribution has a population mean, μ, of 139 and a population standard deviation, σ, of 15.…

A: Given data, Mean( μ)=139 sd( σ)=15 If x=81 z=?

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: A score that is 20 points above the mean corresponds to a z-score of z – 1.25. What is the standard…

A: Given: z= 1.20 20 points above the mean. that is

Q: What z-score would be associated with the value x = 172?

A: Given that Mean = 112 SD = 10 And value X = 172

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: A given distribution has a population mean, μ, of 100 and a population standard deviation, σ, of 9.…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 9 X~N (100, 9)

Q: A z-score of +1.6 represents a value which is how many standard deviations above the mean?

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Q: A given distribution has a population mean, μ, of 137 and a population standard deviation, σ, of 12.…

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

A: Given:  population mean of random variable x is =50 and standard deviations=8  then find z score…

Q: On an exam, Tom scored 8 points above the mean and had a z-score of +2.00. The standard deviation…

A: Given: z-score=2 Score above the mean=8

Q: A population has a mean of μ and a standard deviation of  . a. If 3 points were added to every…

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Q: The exam scores of 200 students are distributed normally with a mean of 72 and a standard deviation…

A: Total students = 200 Standard deviation = 10 And distribute mean = 72 We have to find the number of…

Q: Find the z-score for the value 80, when the mean is 70 and the standard deviation is 2.

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Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 12.…

A: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 12.…

Q: A grade of 81 in a test in which the mean is 75 and the standard deviation is 12 corresponds to a…

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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: What happens to the standard deviation if the differences between the mean and data values are…

A: The standard deviation, which is described through a mathematical quantity to measure the amount of…

Q: A score of is one and one-half standard deviations below the mean

A: Here Given for Normal distribution with  Mean=μ=30 SD=σ=6

Q: A normal distribution has a mean of 77 and a standard deviation of 6. Find the z-score for a data…

A: z score: Consider X as a normally distributed random variable, with mean μ and standard deviation…

Q: 3. The annual per capita consumption of ice cream (in pounds) in the Philippines can be approximated…

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Q: For a sample, a score that is 12 points above the mean has a z-score of z = 1.20. What is the sample…

A: We have to find sample standard deviation

Q: A given distribution has a population mean, μ, of 138 and a population standard deviation, σ, of 9.…

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.