For a population with mean of 50 and standard deviation of 8, what is the z- score that corresponds to X=44? а. -2 b. 1.5 С. 1 O d. -0.5 O e. -0.75

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A: HERE GIVEN  Mean=X¯=77 Beats S=13.6 Beats

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A: It is given that: For the Accuplacer test, Meanμ1=40 Standard deviationσ1=9 For the GPAs,…

Q: Mean 255, x is 230 and z score is -2 find standard deviation

A:

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

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A: According to the provided information,

Q: In a population with mean 50 what standard deviation score would have a score of X=45

A:

Q: What is the z-score of x when x = 2 and the mean = 5 and standard deviation = 3? а. -3.33 b. -3.0 C.…

A: From the provided information, Mean (µ) = 5 Standard deviation (σ) = 3

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: The distirbutions of the Accuplacer test and High School GPAs are given.

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A: given that,population standard deviation, σ =7.5sample mean, x =36.7size (n)=50

Q: he scores on a psychology examination are normally distributed with a mean of 70 and a standard…

A: Solution:  Let X be the scores on psychology examination are normally distributed with mean of μ= 70…

Q: Suppose that you have a X= 75 on an exam with Ú=70. Which standard deviation would give you a better…

A: Given : Suppose that you have a X= 75 on an exam with Ú=70

Q: In a population of exam scores, a score of X = 88 corresponds to z = 2 and a score of X = 79…

A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: The z-score of −2 tells us that x=14 is two standard deviations to the left of the mean. The…

A: Given that z score is -2. x=14 is two standard deviations to the left of the mean. That is, μ-2σ.…

Q: A sample of n = 10 scores has a mean of M = 13. After one score is added to the sample, the mean is…

A: Solution-: Given: n=10,M=13 (old)We want to add one score in the sample, the mean is found to be M =…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A:

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

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Q: The scores on a driver's test are normally distributed with a mean of 100. Find the score that is 3…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 28 X~N (100, 28)

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: The mean of the Accuplacer test, The standard deviation of the Accuplacer test, The mean of the High…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: Given information: Accuplacer μ=40, σ=8 High school μ=2.6, σ=0.20

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A: INTRODUCTION:  LARGE SAMPLE TEST  x1 be the sample mean of the sample taken from the first…