Only handwritten solution 1) Find the value of standard deviation, if mean is 10 and raw score is 12.Z score is 2.

Q: what will be the value of X at the z score =-3 given, mean=10 and standard deviation =2?

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Q: Describe about the mean absolute deviation.

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Q: Scores for a standardized test are normally distributed with a mean of 1200 and a standard…

A: given data μ = 1200σ = 60 normal distributionn = 64P(1200<x¯<1214) = ?

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Q: How to find the standard deviation

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Q: The results of a common standardized test used in psychology research is designed so that the…

A: It is given that the mean and standard deviation are 145 and 30.

Q: What is the corresponding z score, mean is 60, standard deviation is 8.1, X=72

A: We have to find z score.

Q: The mean playing time for a large collection of compact discs is 34 minutes, and the standard…

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Q: The mean number of English courses taken in a two-year time period by male and female college…

A: Given: The mean number of English courses taken in a two-year time period by male and female college…

Q: on jan 15 the temperature is 4 degre standar deviation above the mean what is temperature on jan 15

A: Given that Mean temperature = 16 And SD = 0.5 Let x denote the temperature on Jan 15.

Q: The data in a data set are normally distributed with a mean of 150 and a standard deviation of 30.…

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Q: The scores on a standardized test are normally distributed with a mean of 105 and standard deviation…

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Q: The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22.…

A: Let X be the random variable from Normal distribution with mean (μ) = 110 and standard deviation (σ)…

Q: The formula for the standard error (standard deviation of the distribution of sample means) implies…

A: Standard error is approximately equal to standard deviation,it is a part of inference statistics. It…

Q: how do you find the standard deviation when the score is 9 points above tthe mean?

A: = population standard deviation = the size of the population = each value from the population =…

Q: Find the proportion of scores greater than 70 mean is 90 standard deviation is 10

A: The standard normal distribution:A continuous random variable Z is said to follow standard normal…

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A: Consider X be a random variable which follows normal distribution indicating the score earned on a…

Q: Adding 10 points to every score in a distribution will not change the value of the standard…

A: To add 10 numbers to every score in a distribution will not change the value of the standard…

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A: Given information Sample mean x̅ = 1905 pounds Population mean µ = 1900 pounds Sample size n = 90…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: The standard normal value helps to understand the number of deviation of observations from the mean.…

Q: How does the curve change when the standard deviation is the same and the mean changes?

A: The mean is the center of symmetry of a curve or normal density curve.

Q: Change z-score (-2.00) into X value – Mean = 50, standard deviation = 10

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Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. What IQ do you need to…

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A: Given population mean μ=0.46  Population standard deviations σ=0.12

Q: TRUE OR FALSE: the standard deviation describes the average deviation between the individual scores…

A: The standard deviation is a measure of dispersion. It measures the data on how much they have…

Q: How does one calculate the standard deviation?

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Q: The Psych 230 students finished the course with a total population mean of 130 points and the…

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Q: You have a data set with mean = 40 and standard deviation = 3. What can you say about the percentage…

A: Given  μ=mean=40, sd=σ=3 P(32<X<40)= ?  Note: this probability value calculated from standard…