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## Related Statistics Q&A

Find answers to questions asked by students like you.

Q: For a social club, the members had a mean age of 68 and a standard deviation of 10 years. What is…

A: The mean is given μ=68 Standard deviation σ=10 And the random value is x =50 Now the formula for z…

Q: Find the z-score for the value of 69, when the mean is 96 and the standard deviation is 5.

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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: find the z-score for the value 95, when the mean is 77 and the standard deviation is 2.

A: Given, mean=77 standard deviation=2 find the z-score for the value 95

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: find the z-score for the value 69, when the mean is 96 and the standard deviation is 5.

A: Click to see the answer

Q: If you score 76 on a commercial pilot exam that has a mean score of 70 and a standard deviation of…

A: We have to find given percentile ....

Q: Scores on a test are normally distrubuted with a mean of 63.2 and a standard deviation of 11.7.…

A: Let X denote the Scores on a test are normally distributed with a mean of μ=63.2 and a standard…

Q: On a statistics exam, the mean score was 80 and there was a standard deviation of 7. If a student's…

A: Given data, μ=80σ=7If x=92z=?

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A: Click to see the answer

Q: Find the z-score for the value 55, when the mean is 79 and the standard deviation is 5.

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 262 days…

A: Given mean is 262 and standard deviation is 15 days. Pa≤X≤b=98%=0.98P(X≤a)=0.01P(X≥b)=0.01 Consider,…

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

A: Click to see the answer

Q: A given distribution has a population mean, μ, of 131 and a population standard deviation, σ, of 11.…

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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 given distribution has a population mean, μ, of 147 and a population standard deviation, σ, of 8.…

A: Given information Mean (µ) = 147 Standard Deviation(σ) = 8 X = 130 z-score

Q: A score that is 6 points below the mean corresponds to a z score of z= -2.00. What is the population…

A: A score that is 6 points below the mean corresponds to a z score of z=-2.00

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: In a population with mean 50 what standard deviation score would have a score of X=45

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Q: A given distribution has a population mean, μ, of 134 and a population standard deviation, σ, of 11.…

A: According to the provided information, we have Raw score, X = 91 μ, Population mean = 134 σ,…

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

A: Click to see the answer

Q: A population data set has a mean of 81 and a standard deviation of 5.2. Find the z-scores for each…

A: Population mean, μ=81 population standard deviation, σ=5.2 The formula of z-score is, z=x-μσ…

Q: A given distribution has a population mean, μ, of 136 and a population standard deviation, σ, of 12.…

A: Given, Mean(μ) = 136 standard deviation ( σ) = 12 raw score (x) = 147

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 15.…

A: Click to see the answer

Q: A given distribution has a population mean, μ, of 118 and a population standard deviation, σ, of 8.…

A: Solution: Let X be the random variable with mean µ and standard deviation is σ. Then, the Z-score…

Q: A given distribution has a population mean, μ, of 145 and a population standard deviation, σ, of 5.…

A: Click to see the answer

Q: Jone works for a Italian dramatic agency whose workers had an average income this past year of…

A: Click to see the answer

Q: A given distribution has a population mean, μ, of 111 and a population standard deviation, σ, of 7.…

A: Click to see the answer

Q: A given distribution has a population mean, μ, of 127 and a population standard deviation, σ, of 11.…

A: We have given that, X be the random variable from normal distribution with mean (μ) = 127 and…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 262 days…

A: Let X be the lengths of pregnancies in a small rural village x¯=262sd=16 X~ Normal (262, 162) For…

Q: A given distribution has a population mean, μ, of 106 and a population standard deviation, σ, of 8.…

A: Click to see the answer

Q: A given distribution has a population mean, μ, of 142 and a population standard deviation, σ, of 12.…

A: Click to see the answer

Q: A given distribution has a population mean, μ, of 143 and a population standard deviation, σ, of 6.…

A: we have given that mean (μ) =143 ,standard deviation(σ)=6 and , X=112 and X ~N(μ=143 ,σ^2 =36)…

Q: The final grades in a math class has a mean of 77 and a standard deviation of 9.77 if the professor…

A: Here we need to find the cutoff for A grade. Given that the top 10% are given A. We assume that the…

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

A: Click to see the answer

Q: A score that is 6 points below the mean corresponds to a z -score of =2.00. what is the population…

A: It is given that the distance from the mean d = 6 and z-score is 2.

Q: A given distribution has a population mean, μ, of 108 and a population standard deviation, σ, of 12.…

A: Click to see the answer

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: The variance in a data set is 427. Find the standard deviation. Round to two decimals.

A: The random variable is X. It is given that the variance is 427. We have to find the standard…

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

A: Click to see the answer

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

A: Click to see the answer

Q: A successful basketball player has a height of 6 feet 4 inches, or 193 cm. Based on statistics…

A: Given: Observed height= 193 cm z score = 2.66

Q: A successful basketball player has a height of 6 feet 2 inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: A successful basketball player has a height of 6 feet 4 inches, or 193 cm. Based on statistics from…

A: Click to see the answer

Q: A successful basketball player has a height of 6 feet 2 inches, or 188 cm. Based on statistics…

A: Click to see the answer

Q: A successful basketball player has a height of 6 feet 2inches, or 188 cm. Based on statistics from…

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

Q: A. In a test of a lifelong brand of tires, a survey revealed that the mean life was 35,000 miles and…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: Suppose the scores on a college entrance examination are normally distributed with a mean of 525 and…

A: Click to see the answer

Q: In a certain distribution of numbers, the mean is 80 with a standard deviation of 3. At least what…

A: Click to see the answer

Q: Use the normal distribution of IQ scores, which has a mean of 100 and a standard deviation of 18,…

A: Given that, Mean = 100 Standard deviation = 18