The results of a common standardized test used in psychology research is designed so that the population mean is 160 and the standard deviation is 30. A subject earns a score of 127. What is the Z-score for this raw score? Z-Score =

Q: The reading test scores for the population of fifth graders is normally distributed with a mean of…

A: Given: X~Normalμ=55,σ2=82

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

A: 1): at given raw score (X=151)      Z score=(X-mu)/sd=-0.8  # mu(population mean)=175  # sd(standard…

Q: The average score of all golfers for a particular course has a mean of 76 and a standard deviation…

A:

Q: The scores on a standardised test are normally distributed with a mean of 95 and standard deviation…

A: Let X denotes the scores on standardized test. Given that X follows N(mean = 95, SD = 20), then Z =…

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 standardized measure of achievement motivation is normally distributed, with a mean of 35 and a…

A: Given that the mean is 35 and the standard deviation is 14. That is, μ=35 and σ=14 Shamu scored in…

Q: A recent poll found that 59% of adults believe the state of moral values is poor. For 400 randomly…

A: Here, n = 400 and p = 0.59

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: An educational study to be conducted requires a test score in the middle 40% range. If the mean is…

A: Let us assume X=score Given that X follows a normal distribution with mean= 100 and standard…

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A: The sample mean and the standard deviation are μ = 80 and σ = 12 respectively.Let X denotes the…

Q: What is the z-score for this raw score?

A: Let ,  Our aim is to find the Z-score .

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

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Q: A Commerce Students and Law Students are taking the same exam. Commerce student has an average score…

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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 scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A:

Q: A person must score in the upper 2% of the population on an IQ test to qualify for membership in…

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Q: .A person must score in the upper 2% of the population on an IQ test to qualify for membership in…

A: As per the guidelines we are allowed to solve maximum of 1 question. If you need help with other…

Q: Dunlop Company conducts tests on tires life. For a particular tires, the standard deviation is 6000…

A: From the provided information, Standard deviation (σ) = 6000 kilometers The 68% of tires life failed…

Q: Suppose the exam average in a class is 82% with a standard deviation of 2. What proportion of…

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Q: What is the raw z-score?

A: Given information Population Mean = mu= 120 Standard deviation = s= 50 Raw score = x =65 Z score = ?

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

A: Let k is 0.6 standard deviation below the mean.  That means -0.6 is the z score of the value.…

Q: The scores on a standardized test are normally distributed with a mean of 85 and standard deviation…

A: If X be the scores. It is known- X~N85, 202 where, m: mean = 85 s: standard deviation = 20

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: 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: 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 95 and standard deviation…

A: Let "X" be the test score. Find z-score (z): The z-score is the measure of how far the standard…

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

A: Formula for z-score is,

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

A: Solution: Let X be the score on a standardized test. From the given information, X follows normal…

Q: The vocabulary test scores for the population of third graders is normally distributed with a mean…

A: given mean μ=60 , standard deviation σ=12 now for the normal distribution z=x-μσ z=x-6012 to find…

Q: What is the z-score for this raw score?

A:

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

A:

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: The mean score of a statistics exam of class A is 75 with a standard deviation of 13 while class B…

A: It is given, Mean score of statistics exam = 75 SD of statistics exam = 13 Mean score of statistics…

Q: What percent of the students received a score below 64, if the mean grade on a test was 70 and the…

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Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A:

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

A:

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A:

Q: Raul received a score of 77 on a history test for which the class mean was 70 with a standard…

A: Define History as H and biology as B. Given: H=77μH=70σH=9B=75μB=70σB=4

Q: The Army reports that the distribution of head circumferences among male soldiers is approximately…

A:

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

A:

Q: A new chemical has been found to be present in the human blood stream, and a medical group would…

A:

Q: The results of a common standa population mean is 105 and the standard deviation is 30. A subject…

A: A z-score is a numerical measurement that describes a value's relationship to the mean of a group of…

Q: The average score of all pro golfers for a particular course has a mean of 70 and a standard…

A: It is given that, The average score of all pro golfers for a particular course has a mean of 70 and…

Q: what is the minimum pregnancy length that can be in the top 8% of pregnancy given a mean of 265 and…

A: Given, Pregnancy length having mean 265 and standard deviation 12. Here, We assume, the pregnancy…

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:…

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: Formula for z-score is