scores of the students are normally distributed with a mean of 85 and a standard deviation of 4. What is the corresponding z-score -2? A -0.80 3.25 ) - 3.25 D) 0.80

Q: On a standard measure of hearing ability, the mean is 300 and the standard deviation is 20. Give the…

A: Given data ,Mean u=300S.D σ=20

Q: e scores on a test are normally distributed with a mean of 150 and a standard deviation of 30. What…

A: Solution:  Let X be the score on test are normally distributed with mean 150 and standard deviation…

Q: Find the IQ Score.  IQ score  0.3446 Distributed with a mean of 100 and a standard deviation of 15.…

A: Given DataMean = 100Standard deviation = 15Probability of IQ score of adults = 0.3446

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: Renee scores an average of 153 points in a game of bowling and her points in a game of bowling are…

A:

Q: A data set has a mean of 300 and a standard deviation of 40. What value would have a z-score of z =…

A: z-score of z = - 2 is -7.55 Reason: z-score of z = - 2=-2-meanstandard deviation=-2-30040=-7.55

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: scores are normally distributed with mean 500 and standard deviation 100. Julie scores 650. Her…

A: Consider X be the random variable representing the SAT scores. X follows normal distribution with…

Q: Scores on a test have a mean of 6 and a standard deviation of 9. Michelle has a score of 57. Convert…

A:

Q: Convert score 46 to z-score if the mean is 40 and the standard deviation is 4.

A: The definition of a z-score is:   z = (X - μ) / σ

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

A: Given: z-score = -2.00 Formula: Where,

Q: IQ test scores are normally distributed with a mean of 99 and a standard deviation of 11. An…

A: IQ test scores are normally distributed with a mean of 99 and a standard deviation of 11. An…

Q: 2000 freshmen at state university took a biology test. the scores were normally distributed with a…

A: Solution: Let X be the scores. From the given information, X follows normal distribution with mean…

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: H=34, o=4.5, the score is 2.5 standard deviations above the mean

A: Suppose the variable of interest is x.The mean is and the standard deviation is .

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: A successful basketball player has a height of 6 feet 3 inches, or 191 cm. Based on statistics from…

A: Since z-score is a measure of how far is the standard deviations away from the mean…

Q: he quantitative subset of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation…

A: Given data population mean (μ)= 500populatiion sd(σ) = 100sample size(n) = 64sample mean ( x¯ )=…

Q: A set of data item is normally distributed with a mean 218 and a standard deviation of 49. Find the…

A:

Q: Scores on an IQ test are normally distributed with a mean of 50 and a standard deviation of 20.…

A: Given: Mean = 50 Standard deviation (σ) = 20

Q: If a student scored 77 points on a test where the mean score was 84.5 and the standard deviation was…

A: Solution: Let X be the score of a student. From the given information, X has a mean µ=84.5 and a…

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the…

A: Given, IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. => μ…

Q: Scores on an IQ test are normally distributed with a mean of 100 and a standard deviation 15. what…

A: Consider X be a random variable which follows normal distribution indicates the scores on an IQ…

Q: Find the lowest score in the final exam that would qualify a student for an A grade.

A:

Q: Suppose that vehicle speeds at an interstate location have a normal distribution with a mean equal…

A: The random variable vehicle speed follows normal distribution. The population mean is 70. The…

Q: at state university took a biology test. the scores were normally distributed with a mean of 70 and…

A: The corresponding z-values needed to be computed are:

Q: 2000 freshmen at state university took a biology test. the scores were normally distributed with a…

A: 2000 freshmen at state university took a biology test. the scores were normally distributed with a…

Q: A population of scores has a mean of 56. In this population, a raw score of 40 corresponds to a z…

A: Given Information: A population of scores has a mean of 56. μ=56 Raw score X = 40 corresponds to a z…