The scores on a mathematics exam have a mean of 78 and a standard deviation of 8. Find the x-value that corresponds to the z-score 5.258. O 72.7 O 130.6 O 25.4 O 120.1

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

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Q: A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of…

A: Given: Population mean (μ) = 3.3 Sample meanx¯=3.1 Population standard deviation (σ)=1.05 Sample…

Q: On a standard measure of hearing ability, the mean is 300 and the standard deviation is 20. Give the…

A: Given data ,Mean u=300S.D σ=20

Q: The heights of men are normally distributed with a mean of 174.12 cm and a standard deviation of…

A: Consider x be a random variable which follows normal distribution indicates the heights of men. The…

Q: If a population has a standard deviation of 16, what is the minimum number of samples that need to…

A: Given,standard deviation (σ)=16margin of error (E)=2α=1-0.88=0.12α2=0.06Z0.06 =1.5548

Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: Given Data: Let X represent the point distribution Mean=530 Standard deviation=80   X~ Normal(530,…

Q: For 5 year old children, the mean weight is 51.01 pounds with a standard deviation of 3.98 pounds.…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)σ. Here, µ and σ are the mean…

Q: Answer the following questions given that the mean weekly quiz score for a class is 72 with a…

A: Given data,Mean μ=72sd     σ=8P(70<X<90)=?

Q: The standard deviation of the residuals is s=5.9. Interpret the value in context.

A: The residual standard deviation 's' is the difference between set of observed and predicted values.…

Q: The grades on a midterm were Normally distributed with a mean of 120 and a standard deviation of 17.…

A: GivenMean(μ)=120standard deviation(σ)=17

Q: The heights of American adult males are normally distributed with a mean of 177 cm and a standard…

A: We need to get the data by using formula P(mean-standardDeviation< x <  mean+standardDeviation…

Q: use the following information for the question. The average travel time to work for a person living…

A: Let X denote the distribution of travel time and it follows normal distribution with mean of μ=17…

Q: A set of scores has a mean of 5.8 and a standard deviation of 2.3. Calculate the z scores for the…

A: Given Data: Meanμ=5.8 Standard deviationσ=2.3   To Find: z-score for a) 2.1 b) 5.7 c) 7.3 d) 12.4

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

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Q: *In a research report, Richard H. Weindruch of the UCLA Medical School claims that mice with an…

A: According to the answering guidelines, we can answer only three subparts of a question and the rest…

Q: Scores on the verbal reasoning portion of the GRE have a mean of 150 and a standard deviation of 8.…

A: The provided information are: Population mean μ=150 Population standard deviation (σ) = 8 Z-score =…

Q: Given the data 18, 23, 26, 29, find the standard deviation to two decimal places answer rounded to…

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Q: The height of adult men in the United States is normally distributed with a mean of 70 inches and a…

A: Z = -0.67 Mu = 70 S = 3

Q: The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation…

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Q: A midterm exam has a mean of 76.0 and a standard deviation of 8.0. If any student with a z-score of…

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Q: In the accompanying display (where both curves are placed on the same number line), which has the…

A: The display shows the normal curves for A and B in same number line.

Q: A recent survey indicated that the average amount spent for breakfast by business managers was $8.0…

A: Givensample size(n)=81Mean(x)=8.5standard deviation(s)=2.5

Q: On a standardized exam, the scores are normally distributed with a mean of 650 and a standard…

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Q: The heights of students at a college are normally distributed with a mean of 175 cm and a standard…

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Q: On an exam with a mean = 70, you have a score of X =75.  Which of the following values for the…

A: Given that, On an exam with a mean = 70, you have a score of X =75. Formula for z-score:…

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: The IQs of applicants to a certain college are approximately normally distributed with a mean of 112…

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Q: The amount of time Mr. Smith spends exercising each day is approximately normally distributed with a…

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

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Q: On an exam, Tom scores 12 points above the mean and has a z-score of z = +2.00. The standard…

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Q: The scores on a mathematics exam have a mean of 73 and a standard deviation of 9. Find the x-value…

A: We have given that  X~N(mu,sigma^2) mu=73  , sigma = 9  ,Z-socre =5.019 Z-socre =(x-mu)/sigma

Q: On a measure of artistic ability, the men for college students in new zealand is 150 and tthe…

A: Given mean = 150Standard deviation = 25The Z score is calculated using the below mentioned formula…

Q: 4. The average waist size for teenage males is 29 inches with the standard deviation of 2 inches.…

A:

Q: The scores on an economics examination are normally distributed with a mean of 72 and a standard…

A: From the provided information, Mean (µ) = 72 Standard deviation (σ) = 16 Let X be a random variable…

Q: If a data value has a z-score of 3.00 and the mean of the distribution is 100 with a standard…

A: 1) Given data, z=3 μ=100 σ=15 X=?

Q: The scores on a mathematics exam have a mean of 65 and a standard deviation of 7. Find the x-value…

A: From the given information,   Mean = 65 Standard deviation = 7   And, z =-2.575

Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

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Q: On an exam with u=52 ,a person scores x=56.Which value for the standard deviation would give this…

A: We have given that,  Mean = 52 , X = 56 , We have to find z-score at  (1) sigma = 2  (2) sigma = 4…

Q: Calculate the mean of a set of data with a standard deviation of 4, given that a value of 73 has a…

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Q: The time that a customer takes to complete a transaction in the business line at the bank follows a…

A: Given Data Population Mean,μ = 5.4 Population Standard Deviation,σ = 1.7

Q: suppose the average time to fill a routine prescription at a local pharmacy is 35 minutes based on…

A: Given data,Mean μ=35sd    σ=11x=48z=?

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

A:

Q: The scores on a mathematics exam have a mean of 70 and a standard deviation of 6. Find the x-value…

A: We have given that  Mean = 70 Standard deviation = 6 Z-score, z = 5.19

Q: A doctor measured serum HDL levels in her patients, and found that they were normally distributed…

A: Given mean= 63.3  And standard deviation = 3.9  a)

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 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: The three data sets have the same mean and range, but is the variation the same? Prove your answer…

A: For all the parts, it is given that, x=5+7+9+11+13+15+177=777=11

Q: A certain machine makes electrical resistors having a mean resistance of 50 ohms and a standard…

A: According to the given information, we have Mean = 50 Standard deviation = 4