The results of a common standardized test used in psychology research is designed so that the population mean is 140 and the standard deviation is 20. A subject earns a score of 138. 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: In a recent year, Washington State public school students taking a mathematics assessment test had a…

A: Given Information:

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

A:

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

A:

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…

A:

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: 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: A study was done for the job satisfaction. In the first study, an Engineer was score 72 with a mean…

A: Given data, For first studyScore (x)=72μ=80σ=12For second studyScore (x)=19μ=20σ=5

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: Given Data: x¯=160σ=30   x=127

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

A: Since z-score is a measure of how far the standard deviation is away from the mean (Above/below).…

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 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: 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:

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 average score of all golfers for a particular course has a mean of 74 and a standard deviation…

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

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.