:Q12. You are given n = 8 measurements: 5, 4, 6, 7, 6, 7, 3, 7. Calculate the range, the _ sample mean (x), the sample variance (s^2), and standard deviation (s). (Round your variance to four decimal places and your standard deviation to two decimal places.) Compare the range and the standard deviation. The range is approximately how many standard deviations? (Round your answer to two decimal places.) standard deviat

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

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Q: The average high temperatures in January for New York City, between 1986 and 1998, are recorded in…

A: Introduction: Sample Standard deviation:  The population standard deviation measures Variability…

Q: After this year's census of its members, the local pilots association found that its members have a…

A: The mean is 4,610 hours and the standard deviation is 671 hours.

Q: Describe about the mean absolute deviation.

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Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: Scores for a standardized test are normally distributed with a mean of 1200 and a standard…

A: given data μ = 1200σ = 60 normal distributionn = 64P(1200<x¯<1214) = ?

Q: Q3. Consider the following exam scores of all students in a class. 39, 15, 27, 21, 33, 24, 18, 36,…

A: Given data :  39,15,27,21,33,24,18,36,42,30

Q: Karen is in her first semester at a certain university and is taking a calculus course with a large…

A: The objective of this question is to calculate the z-score of Karen's exam score and interpret it in…

Q: The distribution of the lengths of a commercially caught fish has a mean 25 cm and standard…

A: Let , X be the lengths of a commercially caught fish with mean μ=25 cm and standard deviation σ=5 cm…

Q: The formula for the standard error (standard deviation of the distribution of sample means) implies…

A: Standard error is approximately equal to standard deviation,it is a part of inference statistics. It…

Q: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 14, 16, 18,…

A: Given observation SAMPLE of scores is: 14, 16, 18, 13, 13, 19, 21, 11 n = 8

Q: how do you find the standard deviation when the score is 9 points above tthe mean?

A: = population standard deviation = the size of the population = each value from the population =…

Q: A cardiologist wants to determine whether there is a change in blood pressure when her patients are…

A: Given : n=45 , x(sample mean of the differences ) = -2 mmHg ,  s(sample standard deviation) = 0.4…

Q: Energy consumption for single family comes is a mean of 1050kw and standard deviation of 218kw. Find…

A: Given information- Population mean, μ = 1050 kw Population standard deviation, σ = 218 kw We have to…

Q: How does the curve change when the standard deviation is the same and the mean changes?

A: The mean is the center of symmetry of a curve or normal density curve.

Q: Find the variance and standard deviation of the given set of data to the nearest tenth. {530, 150,…

A: As we know that varience is of set of data V(x)=1n∑i=1nxi-μ2  and standard deviation is SD=V(x)

Q: standard deviation using the data in the table. No 1 2 3 4 5 6 Number of points 94 95 100 103 92 82

A: Given : No 1 2 3 4 5 6Number of points 94 95 100 103 92 82

Q: Explain an important difference between the standard deviation and the mean.

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Q: An exam is given to all three people in an accounting department.  On this exam, the mean is 102 and…

A: According to the given information, we have Mean = 102 Standard deviation = 7.5

Q: Find the range, sample standard deviation and inter-quartile range (IQR) of the following data set.…

A: Given data set is 23,26,45,51,54,54,60,65,83,97sample size(n)=10

Q: There is a weekend fishing competition that Amanda participates in each year. There are several…

A: The formula for calculating a z-score is z = (x-μ)/σ, where x is the raw score, μ is the population…

Q: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 15, 17, 19,…

A: Given data is 15, 17, 19, 22, 10, 23, 16, 15S.S=122.88

Q: The Psych 230 students finished the course with a total population mean of 130 points and the…

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Q: Isabel attends a fashion institute that has no on-campus housing. The distance she commutes between…

A: Given ,The  distance isabel's commutes between her home and the campus is , X = 19 kilometres.The…

Q: Q3 :- :- if you know the standard deviation = 3 for measured data, what is the variance ?

A: Given in question  Standard deviation = 3

Q: Suppose that replacement times for washing machines are normally distributed with a mean of 8.8…

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Q: A researcher claims that the stomachs of blue crabs from Location A contain more fish than the…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: The United Nations stores statistics about all the live births in the United States. The latest data…

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Q: For each part, compare distribution (1) and (2) based on their means and standard deviation. You do…

A: b). The given data set is: Distribution 1 -20 0 0 0 15 25 30 30 Distribution…

Q: 4. During the course of a semester, 10 students in Mr. Smith's class took three exams. Use Microsoft…

A: Given, Test1 Test2 Test3 90 94 95 65 75 90 51 77 91 88 84 93 72 88 92 75 84 90 60…

Q: 9. mean = 676; standard deviation = 60 Page

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Q: The question is, for the following scores find the mean, median, sum of squared deviations,…

A: The mean of the data is calculated as follows: