A population has a mean of E-50 and a standard deviation of o - 20. a. Would a score of X -70 be considered an extreme value (out in the tail) in this sample? b. If the standard deviation were o 5, would a score of X-70 be considered an extreme value?

Q: For a population with mean of 50 and standard deviation of 8, what is the Z-score that corresponds…

A:

Q: 29. The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what…

A: Since you have posted more than one question, we are answering the first question as per our rule.…

Q: .Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a…

A: Given data,μ=144σ=27P(90<144)=?

Q: 1. A set of 125 golf scores are normally distributed with a mean of 76 and a standard deviation of…

A:

Q: Which of the following is the correct formula for the margin of error of a population mean where the…

A: Margin of error: A margin of error is a statistical measurement for the diff. between actual and…

Q: For a population with mean of 50 and standard deviation of 8, what is the z-score that corresponds…

A:

Q: For a population with mean of 50 and standard deviation of 8, what is the Z-score that corresponds…

A:

Q: (d) If the sample size is n= 16, what is the standard deviation of the population from which the…

A: Using central limit theorem.

Q: For example with m= 80, a score of x = 88 corresponds to z = 2.00.  What is the sample standard…

A: GivenMean(M)=80x=88z-score(z)=2.00

Q: According to the Chebyshev's rule, the proportion of observations within 2.5 standard deviations of…

A:

Q: Suppose that people heights (in centimeters) are normally distributed, with a mean of 170 and a…

A:

Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Random variables are of 2 types, discrete and continuous, a normal distribution is a continuous…

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: Given,mean(μ)=50standard deviation(σ)=8

Q: Given the mean is 100, the standard deviation is 20, and 12 people took the test, which person…

A: We have given that Sample size=n=12 Mean=mu=100  Standard deviation=sigma=20

Q: Suppose that in College Entrance Test, the cutoff score for passing is 85. If the mean of the test…

A:

Q: A set of data is found to have a sample standard deviation of 25. Suppose 9 were added to each of…

A: Given: s=25 9 is added to each of the values.

Q: A sample has a mean M = 55. In the sample, a score of X = 48 corresponds to z = -1.50. What is the…

A:

Q: If an entire population with μ = 60 and s = 8 is transformed into z-scores, then the distribution of…

A: Given X~N(μ,σ) population mean μ=60 population standard deviation σ=8 The formula for a…

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A:

Q: The daily number of eggs produced by an egg processing machine is normally distributed with a mean…

A:

Q: A population has a mean of u deviation of o = 10. a. If 3 points were added to every score in the…

A: (a) The population has mean 50 and population standard deviation 10. Calculation: If n points added…

Q: A population of scores has u=55 and o=15.  if 5 points are subtracted from every score in the…

A: The given data is μ = 55σ = 15 Suppose x1, x2, x3, x4, ..., xn are the data points…

Q: 27. On an exam with a mean of u = 80, a person scores X = 90. Which of the following values for the…

A:

Q: A very bright student is described as having an IQ that is three standard deviations above the mean.…

A: Given information- We have given that a very bright student has an IQ that is three standard…

Q: If a researcher devises a test of emotional intelligence with a mean of 50 and a standard deviation…

A: We want to find the probability  P(40<X<50)

Q: A population has a mean of u=50 and a standard deviation of O=20 A. Would a score of x=70 be…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: Suppose a set of test scores is appproximately bell-shaped, with a mean of 68 and a range of 60.(a)…

A: a). It is given that the test scores are approximately bell shaped with mean 68 days and range of…

Q: Suppose that the distribution of scores on the Graduate Record Exam (GRE) is approximately normal,…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Suppose that the scores of a history test are normally distributed with a mean of 565 and a standard…

A: As per Bartleby guideline expert have to answer first three subparts only..

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A:

Q: with M = 85 and s = 12 is transformed into z-scores. After the transformation, what are the values…

A: According to the sum, A sample with M = 85 and s = 12 is transformed into z-scores. M=sample mean=85…

Q: Let ?̅ be the mean of a random sample of size 65 drawn from a population with a mean of 75 and a…

A: Solution-: Let, X= be the random variable Given: μ=75,σ=19,n=65 We find, (a) Mean of  X¯=? and…

Q: A distribution of numbers is approximately bell shaped. If the mean of the numbers is 129 and the…

A: a. The two numbers that would fall approximately between 68% of the given values are, Thus, the two…

Q: For a population with a mean of 40 and a standard deviation of 8 find the z score corresponding to…

A: a. The population mean is 40 and a standard deviation is 8. The z-score of x=34 for a sample of n=1…

Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Given Data: Let X represent the random variable Mean=180 SD=24 n=64

Q: In your school with 400 Grade 11 students, the final examination in General Mathematics has a mean…

A: From the provided information, Mean (µ) = 38 Standard deviation (σ) = 4 X~N (38, 4) Here X be a…

Q: For a population with a mean of μ= 40 and a standard deviation of σ= 6, find the z-score…

A: From the provided information, Population mean (µ) = 40 Standard deviation (σ) = 6 a) Sample size…

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: In question, Given that mu=50, Sigma= 8 and z score = -0.50 Then we'll find the value of raw score.…

Q: 9. Given that IQ scores are approximately normally distributed with a mean of 100 and standard…

A:

Q: 1. Given a population with mean M= 60, which of the following values for the population standard…

A: Calculate the Z-score corresponding X = 68 using the formula.

Q: For a population with mean of 50 and standard deviation of 8, what is the z-score that corresponds…

A: Given that , mean = μ = 50 standard deviation = σ = 8 x = 46

Q: If the temperature at which a certain compound melts is a random variable with mean value 115°C and…

A: It is given that  Mean = 1150C Standard deviation = 40C 0F = 1.80C + 32

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A:

Q: (c) If the storeroom has 30 reams at the start of the day, how many should the manager expect to…

A: Given: X 0 1 2 3 4 5 P(X=x) 0.05 0.15 0.25 0.4 0.05 0.1

Q: A sample of 10 networking sites for a specific month has a mean of 26.1 and a standard deviation of…

A: We have given , Mean = 26.1 and  standard deviation = 4.2, And Sample size = 10 . We have to find…

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: GivenMean(μ)=50standard deviation(σ)=8z=2.50

Q: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size…

A: The standard error of mean is, SE = σ/√n, where σ is the standard deviation and n is the sample…

Q: 5. In a population with m = 65 and s = 6, Fred is 1 ½ standard deviations above the mean, John's…

A: Hi there! Thanks for posting the question. Since there are multiple questions, we will solve one…

Q: In a certain​ distribution, the mean is 70 with a standard deviation of 5. At least what fraction…

A: Given. μ=70 σ=5 We have to determine the fraction of of the numbers are between 60 and 80.…

Q: 3. (a) In a distribution of 1200 values, the mean is 75 and the standard deviation is 12. Using…

A: Chebyshev's inequality is applied on the probability theory. According to this theorem at least…