Calculus and Above

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Stats 3400c A person's raw score is 7, the mean is 13, and
stats 3400c A person's raw score is 7, the mean is 13, and the standard deviation is 3. What is the person's Z score?… read more
Sandhya_sharma
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Question 2 out of 9. Assume you know the standard deviation
Question 2 out of 9. Assume you know the standard deviation of test scores is 10 and that the distribution is normal. You sample 16 scores and find that the sample mean is 25. Find the p value for a t… read more
GLENN GILONGOS
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I need help with this question. At one​ university, the
At one​ university, the students are given​ z-scores at the end of each​ semester, rather than the traditional GPAs. The mean and standard deviation of all​ students' cumulative​ GPAs, on which the​ z-scores are​ based, are 2.82.8 and 0.50.5​, respectively. Complete parts a through c. … read more
Ryan
Bachelor's Degree
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Score ​-3.0 -2.8 ​-2.6 ​-2.4 ​ -2.2 ​-2.0 ​ -1.8 ​-1.6 ​-1.4
score ​-3.0 -2.8 ​-2.6 ​-2.4 ​ -2.2 ​-2.0 ​ -1.8 ​-1.6 ​-1.4 ​-1.2 Percentile 0.13 0.26 0.47 0.82 1.39 2.28 3.59 5.48 8.08 11.51​z-score ​-1.0 ​-0.8 ​-0.6 ​ -0.4 ​-0.2 0.2 0.4 0.6 0.8 1 Percentile 15.… 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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I am working on a statistics worksheet and struggling with understanding how some of it is
I am working on a statistics worksheet and struggling with understanding how some of it is done. This is the worksheet. 12. For the following scores, find the mean, median, sum of squared deviations, … read more
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1. Assume the fill amount of bottles of a soft drink is normally
1. Assume the fill amount of bottles of a soft drink is normally distributed with a mean of 2.0 liters and standard deviation of 0.04 liter. If we take random samples of 14 bottles, what is the standa… read more
Chirag
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Hi, I need help in statistics in a psychology class.
Hi, I need help in statistics in a psychology class. I have to do step 4 and 5 of the 5 step hypothesis process. It involves math. I have to do calculations with a research with dogs and human health.… read more
Ryan
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Determine whether the given value is a statistic or a parameter.
Determine whether the given value is a statistic or a parameter. After taking the first exam, 15 of the students dropped the class. (Points : 6) Parameter Statistic 2. Identify the number as either co… 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
Trigeoscal
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Problems I am stuck on my homework with: 1.With regards to
Problems I am stuck on my homework with: 1.With regards XXXXX XXXXX standard normal distribution complete the following: (a) Find P(z > 0), the percentage of the standard normal distribution above … read more
Trigeoscal
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A photographer is going to take a shot of a group of 6 persons.
A photographer is going to take a shot of a group of 6 persons. In how many ways can he arrange them in one row?… 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
SusanAthena
Master's Degree
Master's Degree
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A researcher predicts that listening to music while solving
A researcher predicts that listening to music while solving math problems will make a particular brain area more active. To test this, a research participant has her brain scanned while listening to m… read more
SusanAthena
Master's Degree
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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
Stevewh
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Two normal distributions are compared. One has a mean of 10
Two normal distributions are compared. One has a mean of 10 and a standard deviaion of 10. The second normal distribution has a mean of 10 and a standard deviation of 2. Which of the following is true… read more
SusanAthena
Master's Degree
Master's Degree
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The lifetimes of Unicell 9V batteries are approximately normally
The lifetimes of Unicell 9V batteries are approximately normally distributed with mean 112.61 and standard deviation 23.46 hours of operation. If ONE of the Unicell 9V batteries is randomly chosen, wh… read more
SusanAthena
Master's Degree
Master's Degree
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