You are going to convert raw score to z scores of -2, -1, 0, + 1, +2. The raw score is 8, 10, 17, 22, 6, 20, 21, 22, 19, 30. You will take each one of the raw scores and subtract the mean from it, then divide that answer by the standard deviation. Keep subtracting the mean and then divide that answer by the standard deviation on every raw score of the data that is given.

Q: IQ scores are normally distributed with a mean of 67 and a standard deviation of 6. Find out the…

A: Given: X: IQ Scores

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

A: It is given that Mean = 40 Standard deviation SD = 4 Score X = 38

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

A: The Z-score can be calculated as: Where, x = raw value µ = mean σ = standard deviation

Q: A group of students wrote an entrance Math exam and the scores were normally distributed. The mean…

A: The scores were normally distributed with mean 750 and standard deviation 95 μ=750σ=95 Z-score is…

Q: A particular standardized test has scores that have a mound-shaped distribution with mean equal to…

A:

Q: What percentage of the data will fall between 1 standard deviation below the mean and 2 standard…

A: P(-1<z<2)=?

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

A: Given that, Mean = 130 Standard deviation = 20 Raw score = 156

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: Students receive an A+ on a 60 point test if they score 55 points or more.  The marks of a large…

A: Given: X~N(μ,σ)μ=50σ=5

Q: If each score is increased by 25, what will be the mean and standard deviation of the distribution…

A: Given that  The distribution of raw scores on particular achievement test Mean = 500 Standard…

Q: The scores on a​ driver's test are normally distributed with a mean of 100.   Find the score that is…

A:

Q: John got 83 on a test, with a standard deviation of 10.73 and the class mean was 77.1. Paul got 88…

A: From the provided information, John got (X) 83 on a test with a standard deviation (σ) of 10.73 and…

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

A: From the provided information, Mean (µ) = 175 Standard deviation (σ) = 50 Let X be a random variable…

Q: The mean score and the standard deviation in the Statistics test are respectively equal to 80 and…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Sarah's score on the second exam was 34 for which the mean of all scores was 28 and the standard…

A:

Q: What is the mean absolute deviation of 5 scores if their deviation from the mean are 6, -5, 4, 3 and…

A:

Q: Out of a class of 25 students, 24 took an exam in class and got a mean of 74 points and a standard…

A: Given: Total number of students, n = 25            Number of students who gave the test, n' = 24…

Q: If the grades of 100 students have mean 40 and standard deviation 5. If we subtract 3 from each…

A: The new mean is, New mean=Mean-3-2=40-3-2=37-2=-18.5 Thus, the new mean is -18.5.

Q: Omar is trying out to be a firefighter.  On the written exam, the mean of everyone who takes the…

A:

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

A: Given Data; x¯=165σ=50x=145

Q: Ecem claims that the mean CMN 168 score attained by psychology students is 40. Serdar suspects that…

A:

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

A: Let us define a random variable x denoting test score used in psychology research which has;…

Q: A population has a mean of μ = 50, a variance of σ2 = 9, and a standard deviation of σ = 3.  The…

A:

Q: Suppose that Harry and Ron take an exam for which the mean score is 60 and the score of standard…

A: Given information- Population Mean µ = 60 Standard deviation (σ) = 10 Harry's score = 80

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

A: Given: μ=105σ=20 The z-score for the raw score 99 is obtained as below: z=x-μσ=99-10520=-620=-0.3…

Q: The scores on a standardized test are normally distributed with a mean of 120 and standard deviation…

A: Given that, Mean of 120 Standard deviation of 20.

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

A: Given Data: x¯=160σ=30   x=127

Q: A student scores 80 in math which has a mean of 70 and standard deviation of 10. He also scores 85…

A: GivenStudent scores 80 in math with Mean(μ)=70standard deviation(σ)=10student scores 85 in english…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: In statistics, variance is the average squared distance of each data points from the population…

Q: Suppose you scored 83, 77, 72, and 82 O on your four exams in a mathematics course. Calculate the…

A: The given scores are 83, 77, 72, and 82.We need to find the range and standard deviation of the…

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

A:

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

A:

Q: Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the…

A: -2 standard deviation is given by, (Mu-2sigma)= 70  Mu+2sigma= 100 Where mu is mean and sigma is…

Q: For a set of data, μ = 71, X=35, z = -0.60. What is the standard deviation of the population?

A: Given that.   X~N( μ , ?^2 )   μ=71   , ?=?  , X=35 , z=-0.60   Z-score =( x - μ )/?

Q: After taking the final exam, it appears that Tim is part of the 85th percentile in terms of ranking.…

A: GivenMean(μ)=60standard deviation(σ)=3.2

Q: Roland received a score of 70 on a test for which the mean score was 65.5. Roland has learned that…

A: Given Information: The score Roland received, X = 70. The mean score,μ= 65.5 Z score of the test =…

Q: Sean’s exam score was 1.93 standard deviations below the mean. If the exam has a mean of 72 and a…

A: The provided information are: Population mean (µ) = 72 Population standard deviation (σ) = 5 Sean’s…

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

A: Let, X=the results of a common standardized test X follows a normal distribution with mean=140 and…

Q: XYZ Corporation recorded the number of employee absences each week over a period of 10 weeks. The…

A: standard deviation of the number of absences each week.

Q: In a population distribution a score of x equals 28 corresponds to z equals -1.00 and a score of x -…

A: Given From the given information A score of X=28 Corresponds to z= -1 and a score of X=34…

Q: The Variance for a set of scores is 36, what is the standard deviation, what is the range?

A: Given, variance = 36Therefore,  Standard deviation = square root of variance…

Q: The mean score on the Stats exam was 75 points with a standard deviation of 5 points, and Gregor’s…

A: The mean score on the Stats exam was 75 points with a standard deviation of 5 points, and Gregor’s…

Q: If your score on your next statistics test is converted to a z-score, which of these 2- scores would…

A: Given: Z-scores: -2, -1, 0, 1, 2. The height converts to the z score is=4.07

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

A:

Q: Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the…

A:

Q: 2. On a standardized test, Sara had a score of 81, which was exactly 2 standard deviations below the…

A: Given : Test score = X = 81 Standard deviation = σ = 3

Q: The mean score for first exam in your first organic chemistry class (section A) was 60, with a…

A: The score on the exam is denoted by X. In the given problem, mean score is 60 and the standard…

Q: On an intelligence​ test, the mean number of raw items correct is 236 and the standard deviation is…

A: a) The IQ score have a mean 100 and standard deviation of 15. The z score corresponds to IQ score…

Q: A doctor in the oncology department of a hospital surveyed the breathing rate of cancer patients.…

A:

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

A: Given, μ = 165 σ = 30 X = 255   The formula for Z score is:…