The sum of squares of deviations about a mean of 50 for a collection of measurements is 4750. What is the sum of squares about an arbitrary origin of 55 if the number of observations is 100?

Q: The data set has 250 observations and has mean 100 and standard deviation 16. Approximately how many…

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Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…

A: Given data: If average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 68% of…

Q: An auditor finds that the values of a corporation’s accounts receivable have a mean of $295 and a…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: The Sum of Squared Errors for a data set of 18 numbers is 36. What is the standard deviation?

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Q: The mean of a set of data is 108.06 and its standard deviation is 115.45 What is the z score for a…

A: Z-score = 3.3045 answer.

Q: The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation (MAD) of…

A: The given mean absolute deviation form both the data is same that is 2.5. The difference between the…

Q: The mean monthly rent for apartments in a certain city is $930 with a standard deviation of $350.…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

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: The mean income of a group of sample observations is $500; the standard deviation is $40. According…

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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 a researcher is interested in the possible relationship between the amount of screen…

A: List of formulae : Test statistic : t =rn-21-r2 Where , r is correlation coefficient. r =…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: Given information,             Standard deviation (σ) = 2.9             Error (E) = 0.4 To know how…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

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Q: The USA Today reports that the average expenditure on Valentine's Day is $100.89. Do male and female…

A: 1. The formula for the point estimate is: The point estimate for the true difference between the…

Q: The mean score and the standard deviation in the Statistics test are respectively equal to 80 and…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Students at Roseville High School took an IQ test with a mean of 100 and a standard deviation of 15.…

A: GivenMean(μ)=100standard deviation(σ)=15

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

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Q: The mean of a distribution is 291, while the median is 217. Which of these statements is likely to…

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Q: If the standard deviation of a data is 14.50 and if each value of the data is decreased by 5, then…

A: Given : Old standard deviation = 14.50

Q: The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation of both sets…

A: Mean of data set A =42 Mean of data set B=47  Mean absolute deviation of A and B =2.5 To find :-…

Q: There were 200 students and their intelligence were measured. The mean and Standard deviation…

A: N=200 Mean =110 Sd =14

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A:

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: Suppose that Harry and Ron take an exam for which the mean score is 60 and the score of standard…

A: Given information- Population Mean µ = 60 Standard deviation (σ) = 10 Harry's score = 80

Q: a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 34 beats per…

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Q: If the mean height of bonsai trees is 42 cm and 95% of the trees are between 12cm and 72cm. The…

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Q: the mean for the Verbal Reasoning section was 151 with a standard deviation of 9, and the mean score…

A: Note: According to bartleby experts question answers guidelines an expert can solve only first three…

Q: Assume that a data for pulse rates of 50 participants is ollected. The mean pulse rate has the mean…

A: Range rule of thumb: The values are significant if it is lies within 2 standard deviations away from…

Q: Suppose that the mean IQ in the United States is roughly100 and the standard deviation is 15 points.…

A: Given: Meanμ=100Standard deviationσ=15 Consider, X be the random variable that follows the normal…

Q: The data set has 80 observations and has mean 30 and standard deviation 5. Approximately how many…

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Q: An mechanic wishes to determine the length of the typical battery cable. If he knows that the…

A: Given: Standard deviation =3.7 E=0.30 95% confidence interval =1.96 Determine the number of cables…

Q: In a qualifying examination for admittance to the BS Psychology. the mean score was 75 and the…

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Q: The data set has 150 observations and has mean 35 and standard deviation 4. Approximately how many…

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Q: A school district requires all graduating seniors to take a mathematics test. This year, the test…

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Q: If a number is added to a data set which is far away from the arithmetic mean the what happens to…

A: There are two properties regarding the addition of a number to a data set and its effect on standard…

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: The mean of 200 items is 48 and their Standard Deviation is 3. Find : The sum of all the items, (ii)…

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Q: A student obtained the mean and standard deviation of 100 observations as 40 and 5 respectively. It…

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Q: Suppose you received a score of 95 out of 100on exam 11 . The mean was 79and the standard deviation…

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Q: A group of patients has a mean height of 160 cm and a standard deviation of 10 cm. What score (to…

A: It is given that mean height 160 and standard deviation 10. Aim is to find the cut off value for…

Q: The distribution of heights of adult men is approximately normal with mean 69 inches and standard…

A: Given that information  Mean = mu = 69 inches  Standard deviation = s = 2.5 inches  Z score = -2.5…

Q: The arithmetic mean and standard deviation of a series of 20 items were calculated by a student as…

A: Given that, sample size =n =20 x¯=20, s=5 1. we know that, x¯=20, so, x¯=20⇒∑xn=20⇒∑x=20×20=400 2.…

Q: Suppose you are told that you scored  two standard deviations below the mean on a measure where the…

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Q: 2. On a standardized test, Sara had a score of 81, which was exactly 2 standard deviations below the…

A: Given : Test score = X = 81 Standard deviation = σ = 3

Q: On an intelligence​ test, the mean number of raw items correct is 236 and the standard deviation is…

A: a) The IQ score have a mean 100 and standard deviation of 15. The z score corresponds to IQ score…

Q: An electric company wishes to estimate the true mean lifetime of its bulbs. It desires to be 98%…

A: Given:  Lifetime of bulbs = X  Confidence level = 98% Within 25 hours . This is margin of error.…

Q: IF your mean is 832 and your standard deviation is 86, what values like in the 36% range?? How do…

A: Given Data: Mean=832 SD=86

Q: Students at Roseville High School took an IQ test with a mean of 100 and a standard deviation of 15.…

A: As per our guidelines we are suppose to answer only one question1)GivenMean(μ)=100standard…