ution of scores on the SAT is approximately normal with a mean of µ = 500 and a standard deviation of σ = 100. If the state college only accepts students from the top 65% of the SAT distribution, what is the minimum SAT score needed to be accepted?

Q: Assume X is normally distributed with a mean of 10 and a standard deviation of 2. Determine the…

A: Let X is normally distributed with a mean of 10 and a standard deviation of 2. That is X ~ N( μ =…

Q: In a sample of 13 randomly selected high school seniors, the mean score on a standardized test was…

A: Given information, x¯=1185s=160.7μ=1016n=13 t value: t=x¯-μsn =1185-1016160.713  =3.79

Q: Suppose the mean and standard deviation of the GPAs at Loyola are  Xbar = 2.951; and s = 0.573…

A: Given, X_bar = 2.951 s = 0.573 z_score = -0.720

Q: The time (X) to complete a standardized exam is approximately normal with a mean of 70 minutes and…

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Q: Given that X is normally distributed with a mean of 50 and a standard deviation of 4, determine the…

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Q: On an exam with a mean of M = 98, you obtain a score of  X= 90. Would you prefer a standard…

A: It is not known whether the distribution of the score is symmetric or not. Hence ,we cant use…

Q: A random sample of 40 students has a mean annual earnings of​ $3120 and assume that the population…

A: The assumed margin of error for a provided true standard deviation and a large sample (i.e n>30)…

Q: For a population with a mean of μ= 100 and a standard deviation of σ=20,  Find the z-score for each…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Can you find the standard deviation for sx and sy?

A:

Q: For an exam with a mean of M = 74 and a standard deviation of s = 8, Mary has a score of X = 80,…

A: Concept: A z-score is known as the standard score that determines how much the data point deviates…

Q: The average expenditure on Valentine's day was expected to. E 100.89. Do male and female cinsumers…

A: B. The margin of error at 99% confidence is 13.43971 and it is calculated below: From the given…

Q: Assume that the mathematical scores on the standardized test are normally distributed with a mean of…

A:

Q: Suppose that for a certain population of college students, the mean GPA is 2.84 with a sta deviation…

A: Given that  U=eXV=e2X From the question 9,  EX=2.84σX=0.45

Q: b. Find the mean and standard deviation of x. (Round to three decimal places as needed.) II

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Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(0…

A:

Q: From the following information, find the standard deviation of x and Y variable: Sigma x =235, Sigma…

A: We have given that,  Σ x = 235, Σ y = 250 and Σ x^2 = 6750,  Σ y^2 = 6840,  n = 10 Then,  We wil…

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: If x is normally distributed with a mean of 6 and a standard deviation of 4, find P(x>8) a. 0.1915…

A: If x is normally distributed with a mean of 6 and a stnadard deviation of 4, find Px>8 Answer: b.…

Q: If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then I.Q. of 130 will have…

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Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 37 beats…

A:

Q: Assume that X has a normal distribution where the mean is μ= 15.2 and the standard deviation is σ=…

A: Given information: Mean of the distribution, μ= 15.2  Standard deviation of the distribution, σ=…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 35 beats…

A: Since, we are allowed to answer three sub-parts at a time so we are answering the first three as you…

Q: For samples of the specified size from the population described, find the mean and standard…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 14 X~N (75, 14)

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given,P(z<e)=0.0516

Q: standard deviation s and compare the result to the exact standard deviation of 148.9cm^3, assuming…

A: Given : The brain volumes (cm^3) of 50 brains vary from a low of 956cm^3 to a high of 1484 cm^3

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: GivenMean(μ)=0standard deviation(σ)=1

Q: Use the formula to find the standard error of the distribution of differences in sample means x̅…

A:

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A:

Q: A lab technician is tested for her consistency by making multiple measurements of the cholesterol…

A: State the given values σ=1n=18s=2α=0.01

Q: solve for t.

A: here given ,  A group of faculty members at a local university agreed that the average annual salary…

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: In a population distribution, a score of X= 57 corresponds to z= -0.25 and a score of X= 87…

A: From the given information, The distance between 57 and 87 is 30 units. (=87–57) The distance…

Q: Suppose that the average score on the GMAT exam is 500 and that standard deviation of all sources is…

A: the average score on the GMAT exam is 500  i.e,mean=500standard deviation of all sources is  = 100…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 33 beats…

A: The question is about std. normal distribution Given : Lowest pulse rate ( x ) = 33 beats per minute…

Q: a population with a mean of u=45, a score of X=54 corresponds to z=1.50. What is the population…

A: Given data,Mean μ=45X=54z=1.50Sd σ=?

Q: A chemical engineer claims that the population mean yield of a certain batch process is 500 grams…

A: Given data: Mean = 500 Sample size = 25 Sample mean = 518 Sample standard deviation = 40 Given…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A:

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: A population of scores has a mean of μ X = 56. Within this population, a value of X = 68 corresponds…

A: Given: Population mean, μX=56 Observed Value, x = 68 Standardized Normal Value, z = 2.00

Q: In a population distribution, a score of X = 28 corresponds to z = −1.00 and a score of X = 34…

A: Where, For X=28 & z=-1.00 For X=34 & z=-0.50

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 35 beats…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 37…

A: From the provided information, Pulse rates of adult​ females in sample = 37 Mean of listed pulse…

Q: A professor grades students on a normal curve. For any grade x, based on a course mean and standard…

A:

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 38 beats…

A: Given: The lowest pulse rate is 38 beats per​ minute The mean of the listed pulse rates is x = 79.0…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 38 beats…

A:

Q: For a population with a mean of μ = 100 and a standard deviation of σ = 20, a. Find the z-score for…

A: (a) Obtain the standard z-score for the random variable X equals 108. The standard z-score for the…

Q: A variable x has a normal distribution with a mean of 250 and a standard deviation of 20. What value…

A:

Q: Assume that the heights of women are normally distributed with a mean of 63 inches and a standard…

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

Q: For a data set of the pulse rates for a sample of adult​females, the lowest pulse rate is 33 beats…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: From previous experience it is known that the percentage yield of a chemical process is normally…

A: Here use basic of confidence interval