Calculus and Above

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The scores of students on the SAT college entrance
The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean μ=549.1 and standard deviation σ=28.4.(a) What is the probability that a si… read more
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Diastolic blood pressures are assumed to follow a normal
Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12. If someone has a diastolic blood pressure of 100, what percentile is he/she in? … read more
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1. Normal Distributions: Finding Values Data from a state
1. Normal Distributions: Finding ValuesData from a state indicate that scores on the SAT test are normally distributed with a mean of 1120 and a standard deviation of 200. Scores on the ACT test are n… read more
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A study was conducted on students from a particular high
A study was conducted on students from a particular high school over the last 8 years. The following information was found regarding standardized tests used for college admitance. Scores on the SAT te… read more
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1 point) The length, X, of a fish from a particular mountain
1 point) The length, X, of a fish from a particular mountain lake in Idaho is normally distributed with μ=8.7 inches and σ=1.7 inches.(a) Is X a discrete or continuous random variable? (Type: DISCRETE… read more
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ATTENTION RYAN:STASTIC HOMEWORK1. The amount of Jen's
Attachment: 2015-05-12_195353_exam_4_stastic.docx ATTENTION RYAN: STASTIC HOMEWORK 1. The amount of Jen's monthly electric bill is normally distributed with a mean of $160 and a standard deviation of … read more
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Question 1 of 20 5.0 Points The lifetimes of light bulbs of
Question 1 of 20 5.0 Points The lifetimes of light bulbs of a particular type are normally distributed with a mean of 270 hours and a standard deviation of 11 hours. What percentage of the bulbs has l… read more
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1) Identify each of the following as examples of nominal, ordinal,
1) Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement. 1. A poll of registered voters in Florida asking wich candidate they support 2. The lenght … read more
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Let x be a random variable representing the length of a Atlantic
Let x be a random variable representing the length of a Atlantic croaker in controlled lake. A friend claims that the average length of trout caught in this lake is 19 inches. To test this claim we fi… read more
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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
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First quartile = 67 Third quartile = 91 Standard deviation
First quartile = 67 Third quartile = 91 Standard deviation = 9 Range = 48 Mean = 75 Median = 80 Mode = 81 Midrange = 74 Answer each of the following, showing your work: I. What score was earned by mor… read more
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Exam scores were normal in MIS 200. Jason's exam score was
Exam scores were normal in MIS 200. Jason's exam score was 1.41 standard deviations above the mean. What percentile is he in? A.68th B.84th C.75th D.92nd To convert a normally distributed variable X i… read more
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1. (A) Classify the following as an example of nominal,
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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 = … read more
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1) the time to complete a statistics exam is approximately
1) the time to complete a statistics exam is approximately normal distributed with a mean of 105 minutes. 47.5% of the students completed their exam in between 105 and 115 minutes. what is the approxi… read more
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1. For a particular sample of 63 scores on a psychology exam,
1. For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode … read more
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Hi Osbert, you answered my statistics questions last week.
Hi Osbert, you answered my statistics questions last week. I want to give you this one too. I will pay $35. If you want to do this one, then please start now. I will create a question at the main page… read more
Osbert12
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1. Suppose we have a set of blood pressures with a mean of
1. Suppose we have a set of blood pressures with a mean of 80 Diastolic, and a sample standard deviation of 10 points. Assuming a normal distribution of Diastolic blood pressures, between what two val… read more
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