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The mean value of land and buildings per acre from a sample
The mean value of land and buildings per acre from a sample of farms is ​$1400​, with a standard deviation of ​$300. The data set has a​ bell-shaped distribution. Using the empirical​ rule, determine … read more
MunishK
MunishK
Assistant Professor
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The scores and their percent of the final grade for a
The scores and their percent of the final grade for a statistics student are given. What is the​ student's weighted mean​ score? Score Percent of final grade Homework 88 10 Quiz 85 10 Quiz 96 10 Proje… read more
MunishK
MunishK
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Suppose that grade point averages of undergraduate students
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.54 and a standard deviation of .42. Using the empirical rule what percent… read more
Sandhya
Sandhya
Master's Degree
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The mean value of land and buildings per acre from a sample
The mean value of land and buildings per acre from a sample of farms is ​$13001300​, with a standard deviation of ​$100100. The data set has a​ bell-shaped distribution. Assume the number of farms in … read more
Sandhya
Sandhya
Master's Degree
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For a particular sample of 59 scores on a psychology exam,
For a particular sample of 59 scores on a psychology exam, the following results were obtained. First quartile = 40 Third quartile = 79 Standard deviation = 9 Range = 52 Mean = 67 Median = 71 Mode = 7… read more
Scott
Scott
MIT Graduate
Master's Degree
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FOR STEVE: For a particular sample of 59 scores on a psychology
FOR STEVE: For a particular sample of 59 scores on a psychology exam, the following results were obtained. First quartile = 40 Third quartile = 79 Standard deviation = 9 Range = 52 Mean = 67 Median = … read more
Stevewh
Stevewh
Teacher
Bachelor's Degree
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For a particular sample of 80 scores on a psychology exam,
For a particular sample of 80 scores on a psychology exam, the following results were obtained. First quartile = 65 Third quartile = 98 Standard deviation = 8 Range = 56 Mean = 83 Median = 81 Mode = 5… read more
Stevewh
Stevewh
Teacher
Bachelor's Degree
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9. Household income does not tend to follow a normal distribution
9. Household income does not tend to follow a normal distribution in a particular state, yet average income is approximately $45,000/year in this state, with a standard deviation of about $9000. At le… read more
Osbert12
Osbert12
Master's Degree
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1. SAT I scores around the nation tend to have a mean scale
1. SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the populati… read more
SusanAthena
SusanAthena
Master's Degree
Master's Degree
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Help1. For a particular sample of 77 scores on a psychology
Help 1. For a particular sample of 77 scores on a psychology exam, the following results were obtained First quartile = 42 Third quartile = 69 Standard deviation = 10 Range = 54 Mean = 62 Median = 56 … read more
SusanAthena
SusanAthena
Master's Degree
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For a particular sample of 63 scores on a psychology exam,
For a particular sample of 63 scores on a psychology exam, the following results were obtained: First quartile=47 Third quartile=81 Standard deviation=11 Range =68 Mean=70 Median=71 Mode=77 Midrange=5… read more
Osbert12
Osbert12
Master's Degree
2,468 satisfied customers
1. For a particular sample of 80 scores on a psychology exam,
1. For a particular sample of 80 scores on a psychology exam, the following results were obtained. First quartile = 65 Third quartile = 98 Standard deviation = 8 Range = 56 Mean = 83 Median = 81 Mode … read more
Stevewh
Stevewh
Teacher
Bachelor's Degree
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A placement test has a mean of 82 and a standard deviation
A placement test has a mean of 82 and a standard deviation of 2. A histogram of the data shows that the distribution is bell-shaped. Using the Empirical Rule what two values have about 99.7% of the cu… read more
Sandhya
Sandhya
Master's Degree
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For a standardized psychology examination intended for psychology
For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 175. The grading process of this year's ex… read more
Ryan
Ryan
Bachelor's Degree
4,665 satisfied customers
I want to know if I could get someone to help me with these
I want to know if I could get someone to help me with these problems. I have tried to answers some of them I just want to make sure if I am on the right track with them. Thank you for any help I can g… read more
Osbert12
Osbert12
Master's Degree
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For a particular sample of 50 scores on a psychology exam,
For a particular sample of 50 scores on a psychology exam, the following results were obtained. First quartile = 52 Third quartile = 84 Standard deviation = 10 Range = 66 Mean = 79 Median = 78 Mode = … read more
Hasan
Hasan
Bachelor's Degree
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Chebyshevs theorem and the empirical rule A nationwide test
Chebyshev's theorem and the empirical rule A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of 20 to80 . In a recent year, the national mean sco… read more
abozer
abozer
Bachelor's Degree
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A game involves a wheel with 20 nickel values ranging from
A game involves a wheel with 20 nickel values ranging from 5, 10, 15…, to 90, 95 and 100 market on it. Players spin the wheel (a fair wheel) once or twice, with the aim of obtaining the highest total … read more
Stevewh
Stevewh
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Bachelor's Degree
6,427 satisfied customers
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