Suppose you have values on variable  equal to , and wish to compute a measure of variation from the mean. Without knowing what the exact values of the variable are, which of the following measures will necessarily generate a positive number (which is of course different from zero) regardless of the values for ?   a) the sum of absolute deviations from the mean b) the sum of deviations from the mean c) the sum of squared deviations from the mean d) the standard deviation e) a and c f) none of the above

Q: Illustration : The mean and standard deviation of a set c 100 observations were 40 and 5 respective…

A: Mean is the average value of given observations. For a set of 'n' observations, mean is the sum of…

Q: Given the mean of 62 and the standard deviation 8, find the z-score that corresponds to each of the…

A: Given:  Mean = mu = 62 Standard deviation = sigma = 8 X = 78

Q: When the coefficient of variation is equal to 20% and the standard deviation is equal to 5, then the…

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Q: A population has a mean of u = 50 and a standard deviation of o = 10. a. If 3 points were added to…

A: A population has a mean of μ= 50 and a standard deviation of σ = 10.

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 3535…

A: Note: Hey there! Thank you for the question. As you have posted several sub-parts of a question,…

Q: The sum of squares of deviations about a mean of 50 for a collection of measurements is 4750. What…

A: Given data Sum of squares of Deviation = 4750

Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…

A: Given that mean =70,s.d =2.5 p( x>72) =?

Q: For any population, the sum of the deviation scores will be always equal to zero. true or false

A: Sum of deviation is given as: ∑i=1n(xi-a) Where, a=any arbitrary constant.

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 31 beats…

A: We have given that x̅ = 77 s = 18.4

Q: With a height of 64 in, Marvin was the shortest president of a particular club in the past century.…

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Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 3838…

A: The difference between pulse rate of 38 beats per minute and the mean pulse rate of the females is…

Q: If 40 is added to cach of a set ofr 25 values, the Coefficient of Variation changes to 40 % and if…

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Q: The sum of deviations (of actual observations) around the mean are always equal to zero TRUE OR…

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Q: Suppose that in a given semester, the MEAN of units taken by students at Delta is 17 and has a…

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Q: Assume that the professor in a class assigns grades based on the following: A: Scores which are 1.5…

A: We first find the mean  For standard deviation, we make a table  Then we add the values in the…

Q: For a population, a deviation score is computed as X – σ.

A: What is Deviation score ? Deviation score is basically a degree of score from which a raw score is…

Q: The standard deviation of set A is less than the standard deviation of set B, and their means are…

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Q: 1. Using the formulas, compute the mean and standard deviation of this sample of scores.  45 58 63…

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Q: Suppose the people living in a city have a mean score of 40 and a standard deviation of 7 n a…

A: We have given that  Mean=mu=40  Standard deviation=sigma=7

Q: Given that mean set is 15, and then z - score for the value x = 24 in this data set is z=1.5 , then…

A: We have to find the standard deviation of this set ...

Q: Suppose that the weights of packages shipped by Atlas Shipping are normally distributed, with mean…

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Q: Suppose that a researcher is interested in the possible relationship between the amount of screen…

A: Given information: X represents the amount of screen time each day. Y represents IQ of school-age…

Q: n pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 164…

A: As the population standard deviation is not known, we will use t distribution.

Q: 1 point to a​ D, and 0 points to an F. What is the GPA of a student who gets an A in a 3​-credit…

A: The data of the score of the student will be: credit score   grade(point)   number of course 3…

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: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 3131…

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

Q: ith a mean of 110 and standard dev. of 15, find the 3 unique deviations to the left and right of the…

A: Deviations to the left   i) One standard deviation away from mean x = u - s x = 110 - 15 = 95   ii)…

Q: Consider a data set that has a mean of 20.3 and a standard deviation of 6.4. According to…

A: Given information- Population mean, µ = 20.3 Population standard deviation, σ = 6.4 We have given…

Q: Assume that the length of human pregnancies from conception to birth varies according to a…

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Q: If we have two sets of readings A&B and if the standard deviation of set A is 9.8 and the standard…

A: Given that the standard deviation of set A is 9.8 The standard deviation of set B is 2.02

Q: Consider a data set that has a mean of 33.7 and a standard deviation of 6.8. According to…

A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…

Q: Which of the following would be the most reasonable estimate for the weight of house cats?  (The…

A: # To estimate the weight of house cat in U.S A

Q: The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Using Chebyshev’s…

A: Here, The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Chebyshev’s…

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: It is given that a vending machine dispenses a mean of 7.6 ounces with a standard deviation of 0.4…

A: Given: Mean = 7.6  Standard deviation =  0.4 oz

Q: Given that the mean μ=20 and the standard deviation σ=4, find P (15 < x < 25)

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Q: A variable of a population has a mean of u=89 and a standard deviation of o=18.  A. Identify the…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: Use Chebyshev's theorem to calculate an interval with 80% of the data, with mean 17 and standard…

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Q: For any set of data, the sum of the deviation scores will always be Equal to zero O Cannot be…

A: The sum of the deviations from the mean is zero. This will always be the case as it is a property of…

Q: For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm.…

A: The coefficient of variation is calculated asCV=σμ×100%

Q: The range for a set of data is estimated to be 36.a. What is the planning value for the population…

A: a.

Q: Suppose an interval estimate for the population mean was 62.84 to 69.46. The population standard…

A: Given : Interval estimate for the population mean was 62.84 to 69.46 Population standard deviation…

Q: Assume that the Leaf Area Index over a management area is normally distributed with a mean of 3 and…

A: Sample mean = M = 3 Standard details = s = 0.2

Q: A distribution with u = 55 and o= 6 is being standardized so that the new mean and standard…

A: Introduction: For a random variable, X with mean μ, and standard deviation σ, the z-score is given…

Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…

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Q: How would a person set up the hypotheses if they wanted to test the claim: the mean temperature of a…

A: We have to find correct hypothesis..

Q: A set of data with a mean of 45 and a standard deviation of 8.3 is n Find each value, given its…

A: A mean is 45 with standard deviation 8.3 normally distributed. μ=45σ=8.3

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: If x the mean of 12 determinations = 9.79, and μ the true value = 9.03, find out whether or not this…

A: From the provided information, Sample size (n) = 12 Sample mean (x̅) = 9.79 Sample standard…

Q: Given that the mean μ=20 and the standard deviation σ=4, find P (x<25)

A: Given that. X~N( μ , ?2 ) μ = 20     , ? = 4 Z-score =( x - μ )/?