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December 8, 2016

# Search: statistics-?mean average with lowest number out?

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statistics-?mean average with lowest number out?
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
January 7, 2013 by tony

statistics-?mean average with lowest number out?
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
January 7, 2013 by tony

Statistics
What I mean by a "running number" is that the average is always changing. If I turn in 10 homework assignments and the grades are as follows: 58, 87, 99, 90, 92, 95, 89, 90, 95, 91 then my average is 88.6. If I turn in 10 more assignments my average changes, we don't say that ...
January 26, 2014 by Help

Statistics
1. A study of 40 people found that they could do on the average15 pull ups with a standard deviation of .6. Find the 99% confidence interval for the mean of the population. 2. A study of 50 pizza delivery workers found that they could make 6 deliveries per hour with a standard...
May 9, 2013 by Anonymous

Math
The average of a group of seven test scores is 80. If the lowest and highest scores are thrown out the average of the remaining scores is 78. What is the average of the lowest and highest scores?
November 23, 2015 by Ryan

Statistics
I have a couple questions I answer for home work could some look atthem and tell me If I am doing them right I also am having problems understanding the variance and standard deviation are the site you can suggest that would help with this I need a step by step help 11. For ...
February 6, 2009 by KEENE

statistics
In a random sample of 50 babies 4 to 7 month old the average number of hours they slept per day turned out to be 14.2 hours with a standard deviation of 1.6 hours find and interpret a 90% confidence interval for the mean number of hours slept by babies at this age
June 6, 2012 by Julio

statistics
In a random sample of 50 babies 4 to 7 month old the average number of hours they slept per day turned out to be 14.2 hours with a standard deviation of 1.6 hours find and interpret a 90% confidence interval for the mean number of hours slept by babies at this age
June 6, 2012 by Julio

Statistics
The head librarian claims that books have been checked out an average of seven times in the last year. You suspect she has exaggerated the checkout rate and that the mean number of checkouts per book per year is, in fact, less than seven. Using the computerized card catalog, ...
May 2, 2008 by Lindy

math
Does anyone know how to explain mean, median, mode and range mean?? mean-the average of a group of numbers median-the number that is in the middle in an in order group of numbers mode-most common number in a group of numbers range- the difference or interval between the ...
September 20, 2006 by Callie

math
A teacher allows the students to each "throw out" their lowest test score in order to increase their overall grade. The original mean score of 5 tests is 72.8. After the removal of the lowest test, the mean score becomes 78.5. What is the score of the removed test? A) 53 B) 50...
April 4, 2010 by Nicci

statistics
4. The scores on a university examination are normally distributed with a mean of 62 and a standard deviation of 11. If the bottom 5% of students will fail the examination, what is the lowest score, to the nearest whole number, that a student can have and pass?
February 3, 2011 by loni

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
May 2, 2014 by Matt

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
May 3, 2014 by Matt

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
May 4, 2014 by Matt

Statistics
28. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed 144 students. The statistics showed that students studied an average of...
October 22, 2011 by Steph

Statistics
1. A study of 40 people found that they could do on the average15 pull ups with a standard deviation of .6. Find the 99% confidence interval for the mean of the population. 2. A study of 50 pizza delivery workers found that they could make 6 deliveries per hour with a standard...
May 3, 2013 by Cam

Math/Statistics
A statistics teacher believes that the final exam grade for her elementary stats class have a normal distribution with a mean of 82 and a standard deviation on 8. Find the score which separates the top 10% of the scores from the lowest 90% of the scores.
August 11, 2013 by Sean

statistics
select a scale for the data on average highs if the lowest tempreture is 72 and the highest is 88: (A)70 to 90 (B) 69 to 90) (C) 60 to 100 (D) 60 to 80 ?
November 7, 2011 by Anonymous

Statistics
With a spent average of \$90.00 with a standard deviation of \$15.00, what is the maximum amount that you can spend and still be in the lowest 20%?
March 21, 2012 by Diane

Statistics
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable - one three-digit number wins \$600 and all others win nothing - that gamblers never reach "the long run." Even after many bets, their average ...
February 25, 2014 by Ray

Statistics
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable - one three-digit number wins \$600 and all others win nothing - that gamblers never reach "the long run." Even after many bets, their average ...
February 25, 2014 by Ray

Statistics
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable - one three-digit number wins \$600 and all others win nothing - that gamblers never reach "the long run." Even after many bets, their average ...

statistics
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of \$2,225 per hour and a standard deviation of \$220. What is the operating cost for the lowest 5 percent of the airplanes?
November 21, 2010 by Barbara

Statistics
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of \$2,325 per hour and a standard deviation of \$240. What is the operating cost for the lowest 5 percent of the airplanes?
October 9, 2014 by Dany

statistics
A university dean wishes to estimate the average number of hours his part-time instructors teach per week. The standard deviation is 2.6 hours. How large a sample must be selected if he wants to be 95% confident of finding whether the true mean differs from the sample mean by ...
March 30, 2011 by bob

math - statistics
Suppose that the number of insects captured in a trap on different nights is normally distributed with mean 2950 and standard deviation 550. b) Suppose that we change the location of a trap whenever it captures a number of insects that fall in the lowest 5%. If a trap was ...
November 6, 2006 by Lindz

Statistics
Please I Need Help With This Question Showing All Steps...Thank You :) The average number of units that the factory workers at Benzo company assemble per week is μ = 45 with a standard deviation of σ = 12. Assume that the distribution of units assembled is normal. If...
August 2, 2011 by Anonymous

probs & stats
1. A study of 40 people found that they could do on the average15 pull ups with a standard deviation of .6. Find the 99% confidence interval for the mean of the population. 2. A study of 50 pizza delivery workers found that they could make 6 deliveries per hour with a standard...
May 11, 2015 by adrenning

Statistics/probability/maths
Please I Need Help With This Question Showing All Steps...Thank You :) The average number of units that the factory workers at Benzo company assemble per week is μ = 45 with a standard deviation of σ = 12. Assume that the distribution of units assembled is normal. ...
August 2, 2011 by evangeline johnny

statistics
A study of peach trees found that the average number of peaches per tree was 625. The standard deviation of the population is 140 peaches per tree. Ascientist wishes to find 80% confidence interval for the mean number of peaches per tree. How many trees does she need to sample...
June 18, 2013 by betsy

statistics
State the null and alternative hypothesis for the following: 1.) A small local bank wants to check if the average daily balance is not higer than 3500 for its individual saving account. Ho: Ha: 2.) A researcher wants to find out if the mean weekly wage of several thousands of ...
September 30, 2012 by nitz

algebra
find five numbers with a mean of 16, a median of 15 a mode of 21 and a range of 11. hi Anna i hope this helps median is the middle number . mean is all the numbers added up then divided by the amount of numbers. mode is the number that occurs most often. range is the lowest ...
August 17, 2006 by Anna

geometry
a salesperson drove 238,259,87,163and 198 miles on a 5 day trip what was the mean number of miles driven per day? please Add the 5 numbers together. Then divide by 5 to find the mean (average) number of miles she drove each day. what is a mean A mean is the average. To find ...
June 12, 2007 by isaiah

Statistics
62.Refer to the Baseball 2009 data, which report information on the 30 Major League Baseball teams for the 2009 season. a. At the .05 significance level, can we conclude that there is a difference in the mean salary of teams in the American League versus teams in the National ...
December 1, 2012 by Dee

I have to determine which method - mean, median, or mode - would be best for answering the following question: Find the average number of athletes for the sample of 7 countries listed by deciding which measure of center is the best represntation of the number of athletes from ...
March 12, 2014 by Alexis

Statistics
I am so lost on this statistics question would someone help me figure out how to answer it? A random variable X is normally distributed with the mean and standard deviation 1.6. What is the proportion of the data values that lies within 1.6 standard deviations from the ...
November 27, 2012 by Layney

statistics
If the average commute time is 10.9 miles, but the average is actually the mean of a sample of 300 commuters and the sample standard deviation is 6.2 miles Estimate the true mean commute distance using 99% confidence level.
November 23, 2013 by Mel

statistics
Using the numerical data for your team project, conduct a two sample, two-tailed hypothesis test for the mean, with a 0.05 level of significance. Find and interpret each step. H0: H1: Test statistic = Critical value = p-value = Reject the null hypothesis or do not reject the ...
July 8, 2012 by Anita

statistics
When you add the values 3, 5, 8,12, and 20 and then divide by the number of values, the result is 9.6. Which term best describes this value: average, mean, median, mode, or standard deviation?
April 19, 2010 by Anonymous

statistics
When you add the values 3, 5, 8, 12, and 20 and then divide by the number of values, the result is 9.6. Which term best describes this value: average, mean, median, mode, or standard deviation?
June 29, 2010 by Anonymous

statistics
When you add the values 3, 5, 8, 12, and 20 and then divide by the number of values, the result is 9.6. Which term best describes this value: average, mean, median, mode, or standard deviation?
April 22, 2013 by Anonymous

Statistics
I have a problem I need some help on. I have answered parts. Any guidance would be appreciated. K For many years the numbers of accidents per week at a hazardous intersection have been studied. The number of accidents per week varies with mean 2.2 and standard deveiation 1.4. ...
August 4, 2007 by Kayse

statistics
You are responsible for planning the parking needed for a new 256-unit apartment complex, and you are told to base the needs on the statistic “average number of vehicles per household is 1.9.” Which average (mean, median, mode) would be best if: • You wanted to be ...
April 5, 2014 by Bridge

Statistics
You are responsible for planning the parking needed for a new 256-unit apartment complex, and you are told to base the needs on the statistic "average number of vehicles per household is 1.9." Which average (mean, median, mode) would be best if: You wanted to be assured that ...
May 17, 2014 by Boo

Statistics
Consider the following data set: 3, 4, 6, 7, 9, 9, 11. Identify a number you could add to the set to keep the mean equal to the median. Please help me out. I have no idea how to find this and my lesson doesn't explain how to do it either. I already know that the mean and ...
September 22, 2016 by Me

math
Please help me to find the first and third quartiles, Q1 and Q3, of the following set of numbers.13, 7, 15, 13, 13, 12, 9, 11, 19, 9 Qrrange the numbers in ascending order, like this: 7, 9, 9, 11, 12, 13, 13, 13, 15, 19 Now divide then into the lowest quartile (Q1), second ...
April 29, 2007 by carmen

Statistic- Average
A mean average of 60 on 6 exams is needed to pass a course. on his first 5 exams, Adam received grades of 46,73,73,63 and 70. If the lowest grade of the exams already taken is to be dropped, what grade must he receive on his last exam to get a C in the Course?
January 7, 2013 by tony

Statistics
The Weight of a small Starbucks coffee is normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. a. highest 10% b. highest 50% c. highest 5% D. highest 80% e. lowest 10% f. middle 50% g...
April 11, 2014 by Kelly

statistics
An instructor in a large lecture class found at the end of the semester that total points scored by students in his class was approximately Normal with mean 530 and standard deviation 80. If 10% of the class are to receive A's (he grades on a curve), what is the lowest number ...
October 23, 2014 by Tara

Statistics
Hi Bob, Thanks for the direction. I got so far with it on my own and became stuck. I did as you said but still have one question. Would the answer to the question be 1.31 ounces or 6.61 ounces? I feel the answer is 1.31. Thanks * Statistics - bobpursley, Wednesday, October 6, ...
October 6, 2010 by Beverley

C Programming
Write a C program that accepts sales made by 5 sales reps for the 4 months that they have been selling the company's products. The program should then find the total sales for 4 months, total sales for each sales rep, and total sales per month. The highest and lowest sales ...
September 9, 2014 by Blessing

statistics
I can't seem to figure out the class interval for this grouped frequency distribution table: Highest Score=684 Lowest Score=56 & the professor has instructed us to use an interval size of 61 The starting point needs to be divisible by 61 due to convention. But the lowest score...
May 27, 2008 by Leeza

statistics
A test was given out to a class of 20 students. The highest possible score to get is 30. The mean of the tests came out to 26. One student was caught cheating and got 20 points removed from their test. what is the new mean. 28,25,24,22 ?
February 28, 2012 by Mike

Statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 30 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
October 26, 2011 by Carmella

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
October 26, 2011 by Marcus

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
December 19, 2011 by sarah

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
January 15, 2012 by Sara

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
February 13, 2012 by Anonymous

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
February 18, 2012 by Miller

statistics
. Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
June 12, 2012 by stacy

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
June 16, 2012 by Kebo

statistics
6. Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
December 11, 2012 by pat

statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
May 27, 2013 by Ann

statistics
Facebook reports that the average number of Facebook friends worldwide is 150 with a standard deviation of 90. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 165 friends or more?
June 24, 2014 by Anonymous

statistics
Consider the average available for all hotel rooms from the previous assignment. Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean number of available ...
August 2, 2011 by tom

statistics
Please advise-Thank you. The Center for Urban Transportation research released a report stating that the average commuting distance in the United States is 10.9 miles Suppose that this average is actually the mean of a sample of 300 commuters and that the sample deviation was ...
April 21, 2012 by vera

Math
If you told someone that the greatest depth of Lake Superior is 1333ft would you be expressing a number similar to mode, median, mean or range? That would be the range. The mode is the numbers that appear most often. Median is the middle number and mean is the average. I don't...
April 23, 2007 by Connor

Math
You have a mean score of 86 on 9 quizzes. The teacher decides to drop your lowest quiz score to determine your final quiz mean. After dropping the lowest score, your mean score on the 8 remaining quizzes is 88. What score was dropped?
January 29, 2009 by David

statistics
The average for the statistics exam was 72 and the standard deviation was 4. Kelsey was told by the instructor that she scored 1.85 standard deviations below the mean.
December 3, 2013 by Anonymous

BUSSINESS STATISTICS
Consider the average available for all hotel rooms from the previous assignment. Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean number of available ...
May 6, 2012 by JULIET

Statistics
I need help with this problem. I think I have some of the answers right but I'm not sure. There is a data set consisting of 33 whole-number observations. Its five number summary is (16, 20, 22, 30, 46) 1. How many observations are stricty less than 22? I think it is 16 because...
September 22, 2009 by Samantha

statistics
There are 20 numbers, the highest is 91, the lowest is 34. The mean is 60 and the standard deviation is 5. What are the 20 numbers?
June 27, 2011 by Annie

statistics
There are 20 numbers, the highest is 91, the lowest is 34. The mean is 60 and the standard deviation is 5. What are the 20 numbers?
June 27, 2011 by Annie

Statistics
A local grocery store wants to estimate the mean daily number of gallons of milk sold to customers. Assume the number of gallons sold follows the normal distribution, with a population standard deviation of 5.10 gallons. A random sample of 60 days shows that the mean daily ...
October 27, 2013 by Joey

STATISTICS
The Sarasota Police department collected data on the number of car accidents ( X ) that occur each day on a certain stretch of route 41. From this data, they derived the probability distribution shown in the table below. X P(X) 0 0.80 1 0.15 2 0.05 What is the expected mean (...
June 2, 2010 by Jake

Statistics and Probability
A computer supply house receives a large shipment of blank CDs each week. Past experience has shown that the number of flaws per CD can be described by the following probability distribution, where the random variable X represents the number of flaws per CD. x P(X = x) 0 0.65 ...
March 9, 2011 by Adam

Statistics
The estimated standard error, sM, provides a measure of the average or standard distance between _____. a score and the population mean (X and ì) a sample mean and the population mean (M and ì) a score and the sample mean (X and M) None of the other options is correct.
January 23, 2013 by Jackie

Statistics
team members estimated that a group of participants spent an average of \$90.00 with a standard deviation of \$15.00. What is the maximum amount that you can spend and still be in the lowest 20%? and the minimum that you need to be in the highest 15%?
March 23, 2012 by Diane

stat
the average number of pushups a United States Marine does daily is 300, with a standard deviation of 50. A random sample of 36 marines is selected. What is the probability that the sample mean is at most 320 push-ups? With a mean of 300, you are looking for a sample using a ...
April 15, 2007 by Anonymous

statistics
Alice has grades of 98, 93, 82, and 89. If all of the grades count the same, what is the lowest grade she can make on the next test to have average of 92?
December 6, 2011 by Nichole

statistics
A column packing for chromatography consists of a mixture of two types of particles. Assume that the particles in the batch being sampled are spherical with a radius of 0.5 mm. 36% of the particles appeared to be pink and are known to have a polymeric stationary phase attached...
March 28, 2010 by Simon

Statistics
You have a population that has a mean of 100 and a standard deviation of 15. You randomly draw 100 people out of this population and record the mean score. You repeat the process a large number of times recording the mean score for each sample you draw. What will be the ...
October 14, 2012 by Jared

Behavioral Statistics
You have a population that has a mean of 100 and a standard deviation of 15. You randomly draw 100 people out of this population and record the mean score. You repeat the process a large number of times recording the mean score for each sample you draw. What will be the ...
October 14, 2012 by Jared

statistics
If random samples, each with n = 36 scores, are selected from a normal population with m = 80 and s = 18, how much difference, on average, should there be between a sample mean and the population mean?
October 19, 2010 by Anonymous

statistics
when will I know it is time to calculate the mean? Is the mean a running number?
January 25, 2014 by Help

Statistics
In a sample of 171, the mean is 58 with a population standard deviation of 4.8. Can someone help me figure out what is the 90% confidence interval of the true mean? Thank you.
October 26, 2010 by Diandra

Statistics
A criminologist is studying school violence, she selects a random sample of 25 adolescents aged 12 to 15 from a local middle school and asks the following,"How many times within the past school year have you been physically assaulted at school? She calculated the following ...
February 27, 2015 by Elena

Statistics
For a population with a mean of (mew) = 50 and a standard deviation of 10, how much error, on average, would you expect between the sample mean (M) and the poulation mean for: a) a sample of n=4 scores b) a sample of n=16 scores c) a sample of n=25 scores Are the sample mean (...
May 24, 2011 by Aestas

chemistry
Is average speed (u) the same as root mean square velocity? I found a formula for root mean square velocity which I know is also used for average speed: (3RT/MM)^1/2 Is that right? I don't know what that is supposed to be an average OF, but is all likelihood it is a root mean ...
January 6, 2007 by Chris

statistics
8. Compare the mean for the heights of males and the mean for the heights of females in these data. Compare the values and explain what can be concluded based on the numbers. Comparing the mean of height between male and female shows that the average height of a female in this...
May 12, 2012 by jeanne

statistics
The average price of a gallon of unleaded regular gasoline was reported to be \$2.34 in Northern Kentucky use this price as a population mean population standard deviation is \$.20. question. what is the probability that the mean price for a sample of 30 station is good then \$....
September 24, 2014 by thickhoneybrown

statistics
otorola discovered that the average defect rate for parts produced on an assembly line varies from run-to-run and is approximately normally distributed with a mean equal to 3 defects per million. Assume that the goal at Motorola is for the average defect rate to vary no more ...
February 22, 2013 by Sandy

statistics
basically i'm at the begining of the text book doing summer work it's talking about mean and stuff asked to find the mean of a set of data and given 14 different numbers the question then goes on and tells me a fifteenth number is added to the set of data with the value of ...
July 15, 2009 by statistics

Statistics
The relationship between the number of games won during one season by a minor league baseball team and the average attendance at their home games is analyzed. A regression analysis to predict the average attendance from the number of games won gives the model y-hat = -2600 + ...
May 25, 2013 by Katie

statistics
hey guys,im sorry if i did any wrong that my question has been deleted,but please help me... hi,care to explain this..its really hard..i only got 2/40 in my exam yesterday,so we have a retest tomorow,and i really need to pass that in order to pass..please help me..thank you ...
January 5, 2009 by

physical science
describe your motio when you are on a swing in terms of kinetic and potetial energy. at which point during your motion is each type of energy the greatest Potential energy is hghest when the elevation is highest. Potential energy is lowest (and kinetic energy highest) when the...
January 9, 2007 by allie

statistics
The scores on an economics examination are normally distributed with a mean of 66 and a standard deviation of 14. If the instructor wishes to assign a grade of A to the top 10% of the class, what is the lowest score a student may have and still obtain an A?
November 6, 2011 by Anonymous

statistics
TRUE OR FALSE 35. A survey of women owned business found that approximately 30% of all small businesses are owned by non‐Hispanic white women. In a sample of 250 non‐Hispanic businesses owned by whites, the average number of businesses owned by female would be 75. ...
July 6, 2015 by meri

Math - Statistics
Suppose that the mean number of customers who arrive at the check-out counters each minute is 4. Create a Poisson Distribution with u (lamda) = 4 for x = 0 to 20. Compare your results to the histogram. 20 random numbers are generated with a Poisson distribution for u (lamda...
December 6, 2007 by J

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