Tuesday

March 31, 2015

March 31, 2015

Number of results: 9,682

**statistics**

The following frequency distribution presents a set of exam scores for a class of N= 20 students. X F CF % C% 90-99 4 20 20 100 80-89 7 16 35 80 70-79 4 9 20 45 60-69 3 5 15 25 50-89 2 2 10 10 a)Using interpolation find the 30th percentile. The answer I came up with was 72. B...
*January 27, 2008 by Lezlie*

**Math**

For a normally distributed distribution of variable x, where the mean is 50, and standard deviation is 2.5, calculate: a) the percentile rank of x=45 b) the z-score of x=52.6 c) the percentile rank of x=58 d) the 29.12th percentile e) the 89.74th percentile f) the z-score of x...
*April 25, 2010 by Ally*

**statistics**

In a class of 300 students, John’s rank was 40. Find his percentile rank
*January 24, 2015 by Anonymous*

**percentile rank**

i would like to able to find the percentile rank of a z score 0.313152 can someone tell me how to do this.
*April 9, 2011 by Ann*

**Statistic in Social Science **

The verbal part of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation of 100. Use the normal distribution to answer the following questions: a. If you wanted to select only student at or above the 90th percentile, what verbal GRE score would you use as a...
*April 29, 2014 by Rhea*

**Statistics: Percentile Rank**

A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. A. What proportion of students drank 7 or more cups of ...
*October 18, 2011 by Joy Chapman*

**statistics**

The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight. a. 10th percentile b. 32nd percentile c. 75th percentile d. 90th percentile e. 99.9th ...
*May 7, 2011 by maribel*

**statistics**

the average score on the statistics quiz was a 70, and there was a standard deviation of 10 points. If the z-socre was -1.0 what is the percentile rank?
*March 2, 2014 by kim*

**statistics**

Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. What is the percentile rank of a score of 89?
*July 7, 2011 by Anonymous*

**Statistics**

What is your percentile rank if you have an ACT of 24?
*February 19, 2011 by Korrie*

**statistics**

Use x2prk formula to find the percentile rank of 84
*September 14, 2011 by marie*

**statistics**

Use x2prk formula to find the percentile rank of 84
*September 14, 2011 by marie*

**statistics**

compute the percentile rank of the raw score 8 in the following distribution 8,5,6,9,3,5
*September 19, 2011 by Emily*

**statistics**

A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. a. What proportion of students drank 7 or more cups of ...
*October 20, 2011 by Scott*

**statistics**

given the data set below what would be the percentile rank of the number 6 2;8;6;9;5
*October 17, 2011 by Anonymous*

**statistics**

For a population of μ = 70 and σ = 20, find the z-score and percentile rank for each of the following X scores: 80, 100, 65, 40.
*June 11, 2011 by julide smith*

**statistics**

For a population of μ = 70 and σ = 20, find the z-score and percentile rank for each of the following X scores: 80, 100, 65, 40.
*February 22, 2013 by jackee*

**Math**

Rank the following data in increasing order and find the positions and values of both the 39th percentile and 67th percentile. 5 9 9 0 7 2 5 6 9 1 0 6
*November 10, 2011 by Jennifer*

**statistics**

rank the following in increasing order and find the position and value of the 91st percentile show all work. 4,,5,4,9,9,1,0,7,4,8,0,9
*October 11, 2010 by mary*

**Statistics**

The 60th percentile of a normal distribution is 110. The 70th percentile is 120. Find the 90th percentile.
*March 7, 2013 by James*

**statistics**

rank the following data in increasing order and find the position and value of the 94,51st percentile. show all work. 4,5,4,9,9,1,0,7,4,8,0,9
*October 11, 2010 by mary*

**Check Statistics **

Calculate the first, second, and third quartiles of the following sample. 2 2 3 3 4 4 4 5 5 5 7 7 8 9 10 Are my answers correct: 25th percentile = 3 50th percentile - 5 75th percentile = 7
*September 26, 2010 by Rhea*

**statistics**

Can a percentile have the VALUE of 517? Can a percnetile have the VALUE -5.8? Can a percentile have the RANK 517? Can a percnetile have the RANK -5.8?
*August 29, 2012 by will*

**Math**

Can someone please help me with these three question? I having a very difficlut time answering them May first question To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income level, and then a few ...
*February 26, 2011 by Latisha*

**university of phoenix**

The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight. a. 10th percentile b. 32nd percentile c. 75th percentile d. 90th percentile e. 99.9th ...
*January 4, 2012 by michelle*

**statistics**

Using the data set below please calculate the 2;8;6;9;5 Range What would be the percentile rank of the number 6? Help please!
*October 12, 2011 by Anonymous*

**Stats**

If a student's rank in a class of 300 students is 111, find the student's percentile rank
*December 7, 2013 by Justin*

**algeba**

if a student's rank in a class of 400 students is 44 find the student's percentile rank.
*July 5, 2011 by john peters*

**algebra**

if a student rank in a class 400 is 87 waht id the student percentile rank
*June 11, 2012 by marie*

**statistics**

A college student takes a standardized test and scores a 163. If the mean is 155 and the standard deviation is 7, what is the student’s percentile rank? (Assume a normal distribution.)
*October 17, 2014 by Gail *

**Research and Statistics**

I want to ensure I've done this problem correctly. Thanks! 3. In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78 12.45 One student’s Math ...
*January 31, 2011 by Lauren *

**Statistics**

Dear Lee, Please confirm these answers to this question. your medical terminology instructor listed the following grades for the class out of a 75 point test: 33,34,43,45,45,54,55,59,60,62,64,66,67,68,67,68,68,69,70,70 a.find the 90th percentile b. your score was 59, what is ...
*November 3, 2013 by Ben*

**Statistics**

Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be normally distributed. A person who scores 68 on this scale has what percentile rank within the population?
*October 17, 2011 by Jen*

**Math**

If a student's percentile rank in a class of 400 students is 87, how do I find the student's class rank.
*February 26, 2011 by David*

**math**

If a student's percentile rank in a class of 400 students is 87, find the student's class rank.
*March 4, 2012 by Anonymous*

**Math**

How do you find the percentile rank of 4.6?
*May 30, 2009 by Angie*

**Statistic**

the percentile rank of t5 = 1.476
*October 27, 2010 by vee*

**Stats....plz help....**

Rank the following data in increasing order and find the position and value of the 56th percentile. Please show all of your work. 0 1 6 8 9 9 8 6 3 1 0 9 How do i find the position and value of the 56th percentile??
*October 16, 2011 by Jennifer*

**Statistics**

your medical terminology instructor listed the following grades for the class out of a 75 point test:<br /> 33,34,43,45,45,54,55,59,60,62,64,66,67,68,67,68,68,69,70,70<br /> a.find the 90th percentile<br /> b. your score was 59, what is your percentile?<...
*November 3, 2013 by Ben*

**Statistics**

your medical terminology instructor listed the following grades for the class out of a 75 point test: 33,34,43,45,45,54,55,59,60,62,64,66,67,68,67,68,68,69,70,70 a.find the 90th percentile b. your score was 59, what is your percentile?
*November 3, 2013 by Ben*

**Statistics**

How do I find a percentile if I only have the mean and sd? ie...what IQ score is associated with the 65th percentile?-mean is 100 and sd is 15. Thanks in advance :)
*April 22, 2012 by joey*

**Statistics**

n=1000, bell-shaped Mean - 5,000 ~950 lie +/-100 of 5000 -4900 to 5100 Required 1) Standard Deviation 2) 97.5th percentile value 3) Z-score for 16th percentile
*September 26, 2010 by Rhea*

**math**

rachel is ranked 72 out of 451 students. whats her class rank percentile?
*November 16, 2010 by alex*

**statistics college**

SATI SCORES AROUND THE NATION HAVE A MEAN SCORE AROUND 500 A STANDARD DEVIATION OF ABOUT 100 POINTS AND ARE APPROXIMATELY NORMALLY DISTRIBUTED A PERSON WHO SCORES A PERFECT SCORE OF 800 ON THE SAT I HAS APPROXIMATELY WHAT PERCENTILE RANK WITHIN THE POPULATION
*May 22, 2012 by melba*

**statistics**

Sat scores l around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distributions. a person who scores 600 on the sat 1 has approximately what percentile rank within the population? please show all ...
*October 15, 2010 by please help in panic mode-mary*

**Algebra 2**

Find the values of the 30th and 90th percentiles of the data 18, 9, 7, 5, 11, 7, 17, 20, 19, 2, 17, 12, 5, 1, 13, 12, 11, 15, 16, 20 * 30th percentile = 9 90th percentile = 20 * 30th percentile = 9 90th percentile = 19 * 30th percentile = 11 90th percentile = 19 * 30th ...
*May 24, 2010 by Skye*

**statistics**

For a normal distribution (symmetrical), a value that is two standard deviations below the mean would be closer to which of the following? Select one: a. 89th percentile b. Third Quartile c. Third percentile d. Median
*October 25, 2014 by Anonymous*

**Statistics**

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 population would have a percentile rank of approximately 16?
*October 17, 2011 by Jen*

**statistics**

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 population would have a percentile rank of approximately 99?
*February 10, 2012 by babyfly04*

**Math**

What is the approximate percentile rank of a lightbulb that failed at 9000 hours if the number of lightbulbs is 400? The number of lightbulbs that lasted between 5400 and 9000 were about 326 lightbulbs. The mean is 7800 and the standard deviation is 1200 My guess was: ...
*December 5, 2012 by alice*

**statistic**

rank the following in increasing order and find the position and value of the 11th percentile show all work. 7 5 3 2 9 6 4 3 8 5 5 8
*October 12, 2010 by janet*

**statistics help please!**

Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
*January 20, 2013 by anoneemose*

**Statistics**

When calculating percentiles, ie the 33rd percentile, do you use the lower limit of the group that contains the 33rd percentile? as in this case: 70-79 11 46 80.7 60-69 9 35 61.4 50-59 8 26 45.61 40-49 7 18 31.58 Would you use the number 49.5??
*February 12, 2008 by Christine*

**statistics**

what is the percentile for the data value. In a data set with a rane of 60.07 to 115 and 300 observations, there are 207 observations with values less thsn 85.4. Find the percentile for 85.4.
*March 7, 2012 by Rose*

**Algebra**

On a standardized test, the distribution of scores is normal, the mean of the scores is 75, and the standard deviation is 5.8. If a student scored 83, the student's score ranks 1. below the 75th percentile 2. above the 97th percentile 3. between the 75th percentile and the ...
*June 8, 2010 by Priscilla*

**statistics**

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 population would have a percentile rank of approximately 97.5? Show all work as to how ...
*September 29, 2012 by Anonymous*

**statistics**

Women’s heights are normally distributed with a mean of 162 cm and standard deviation of 16 cm. a. Define an random variable, X, and describe its full distribution including the mean and variance. b. What percentage of heights are greater than 180 cm ? c. What height is at the...
*December 4, 2011 by Jasmine*

**college statistics**

a set of data is normally distributed with a mean of 1000 and a standard deviation of 100.what would be standard score for a score of 900.what percent of scores is betyween 1000 and 900.what would be percentile rank for a score of 900.
*June 3, 2012 by melba*

**statistics-normal distribution**

a set of data is normally distributed with a mean of 500 and a standard deviation of 100. a) what would the standard score fora score of 700 be? b) what % of scores is between 500 and 700? c) what would the percentile rank for a score of 700?
*October 28, 2010 by mary- can someone please solve,lost*

**statistics**

set of data is normally distributed with a mean of 200 and standard deviation of 50. · What would be the standard score for a score of 300? · What percentage of scores is between 200 and 300? · What would be the percentile rank for a score of 300? (Points : 6)
*August 26, 2011 by Laynette*

**Stats**

Rank the following data in increasing order and find the position and value of the 56th percentile. Please show all of your work. 0 1 6 8 9 9 8 6 3 1 0 9
*October 15, 2011 by Jennifer*

**satistics**

Rank the following data in increasing order and find the position and value of the 65th percentile. Please show all of your work. 2 1 6 3 4 7 0 0 0 7 5 8
*August 20, 2012 by latoya*

**statistics**

2. The results of a recent survey indicate that the average new car costs $23,000, with a standard deviation of $3,500. The price of cars is normally distributed. a. What is a Z score for a car with a price of $ 33,000? b. What is a Z score for a car with a price of $30,000? c...
*September 3, 2012 by Sandra*

**Math**

Suppose there are 400 students in your school class. What class rank is the 20th percentile?
*March 28, 2012 by Bridget*

**math**

supposed that there are 440 students in class. What is the class rank of the student at the 20th percentile
*May 5, 2013 by Anonymous*

**Statistics**

Weights of male mountain lions follow the normal distribution with a median of 150 lb and an interquartile range of 8.2 lb. Find the 75th percentile of the weights. Find the 95th percentile of the weights.
*March 28, 2013 by Andrea*

**Statistics**

Kyle averages 5 finished accounts a day. His standard deviation is 1 account per day and we want the percentile for a day where he finishes 8 accounts. The percentile will be between…
*April 24, 2012 by Anthony*

**Research and Statistics**

2. The results of a recent survey indicate that the average new car costs $23,000, with a standard deviation of $3,500. The price of cars is normally distributed. a. What is a Z score for a car with a price of $ 33,000? 9.415000 b. What is a Z score for a car with a price of $...
*September 11, 2010 by Moreen*

**Statistics**

Suppose the correlation between SAT Verbal scores and Math scores is 0.57 and that these scores are normally distributed. If a student's Verbals core places her at the 90th percentile, at what percentile would you predict her Math score to be/
*January 22, 2008 by Courtney*

**statistics**

Find 10-th, 60-th and 75-th percentiles in each of your data set, then write down each value that corresponds to those percentiles. Now use those values to find sample percentiles empirically (Suppose value “a” corresponds to 10-th percentile in my data set. After finding the ...
*November 20, 2011 by metu*

**Statistics**

Given that a population of scores is normally distriibuted with u=100 and o=8, determine the following: a. The percentile rank of a score of 120 b. The perentage of scores that are below a score of 99 c. The percentage of scores that are between a score of 101 and 122 d. The ...
*August 14, 2013 by Grand Canyon University*

**Algebra**

You are one of the ﬁnalists at a science fair. The scores of the other finalists are 87, 89, 81, 85, 87, 83, 86, 94, 90, 97, 80, 89, 85, and 88. Write an inequality that represents your possible scores if your percentile rank is 80.
*May 11, 2014 by Anonymous*

**Algebra**

You are one of the ﬁnalists at a science fair. The scores of the other finalists are 87, 89, 81, 85, 87, 83, 86, 94, 90, 97, 80, 89, 85, and 88. Write an inequality that represents your possible scores if your percentile rank is 80.
*May 11, 2014 by Anonymous*

**Statistics**

suppose the correla tion between SAT Verbal scores and Math scores is .57 and that these scares are normally distributed. IF a student's Verbal score places her at the 90th percentile, at what percentile would you expect her Math scores to be?
*December 20, 2011 by Nic*

**statistics**

indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. the 29th percentile is greater than the 30th percentile. b. the median is greater than the quartile c. the third quartile is greater than the first quartile d. ...
*May 4, 2010 by Brooke*

**statistics**

sat scores around the nation tend to have a mean score of about 500, a standard deviation of 100 points and are approximately normal distribution. a person who score 600 on the sat has approximately what percentile rank within the population? show all calculations. 600-500/100...
*October 16, 2010 by mary*

**statistics**

The outcome of a standardized test is an integer between 151 and 200, inclusive. The percentiles of 400 test scores are calculated, and the scores are divided into corresponding percentile groups. Quantity A Minimum number of integers between 151 and 200, inclusive, that ...
*June 7, 2014 by faysakelahi*

**Can comeone check my answer for me. Many Thanks! **

A set of data is normally distributed with a mean of 1000 and standard deviation of 100. · What would be the standard score for a score of 1100? · What percentage of scores is between 1000 and 1100? · What would be the percentile rank for a score of 1100? A. z(1100)= (1100-...
*October 22, 2012 by Ashley S*

**statistics/ please help ASAP**

a set of data is normally distributed with a mean of 500 and a standard deviation of 100. a) what would the standard score fora score of 700 be? b) what % of scores is between 500 and 700? c) what would the percentile rank for a score of 700 *please show and answer all ...
*October 28, 2010 by vedry frustrated please help and show work*

**statistics**

sat scores around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distribution. a person who scores 600 on the sat has approximately what percentile rank within the population. show all calculations. * ...
*October 15, 2010 by please help in panic mode-mary*

**ap stats**

based on over 800 housing prices collected at random from the city of Los Angeles, an investigator constructed a histogram and found that the distribution of housing prices was heavily skewed to the right. Which of the following statistics will best represent the center of ...
*May 13, 2014 by emma*

**Statistics**

3. Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...
*July 7, 2010 by Anonymous*

**Statistics**

3. Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...
*July 25, 2010 by Jay*

**statistics**

3. Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...
*September 27, 2010 by tanya*

**Statistics**

Indicate with Yes or No whether the given statement could apply to a data set consisting of 1,000 values that are all different. a.The 29th percentile is greater than the 30th percentile.b.The median is greater than the first quartile.c.The third quartile is greater than the ...
*October 22, 2010 by Anonymous*

**statistics**

Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...
*December 14, 2010 by Sabrina*

**statistics**

Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...
*March 23, 2011 by DEE*

**statistics**

In a competitive application process, two applicants were closely matched and the judges needed to compare their percentile ranking to see who should be offered the last position.Jeremiah ranked 405th in a class of 1,200 and Joshua ranked 12th in a class of 89. Based solely on...
*January 19, 2013 by anoneemose*

**Statistics**

An investment broker reports that yearly returns on common stocks are normally distributed with a mean of 12.4 percent and a standard deviation of 20.6 percent. (Round all k amounts to three decimal places. A negative sign should be used instead of the parentheses. For Z, use ...
*October 10, 2011 by Michael *

**Statistics**

What z-value corresponds to the 18th percentile?
*October 3, 2010 by Lori*

**statistics**

indicate whether the given statement could apply to a data set consisting of 1,000 vlaues that are all differnt. a. the 29th percentile is greater thatn the 30th percentile b. the median is greater thatn the first quartile c. the third quartile is greater than the first ...
*August 13, 2010 by jeff*

**Math**

Score Percentile Score Percentile Score Percentile Score Percentile -3.5 0.02 -1 15.87 0 50 1.1 86.43 -3 0.13 -0.95 17.11 0.05 51.99 1.2 88.49 -2.9 0.19 -0.9 18.41 0.1 53.98 1.3 90.32 -2.8 0.26 -0.85 19.77 0.15 55.96 1.4 91.92 -2.7 0.35 -0.8 21.19 0.2 57.93 1.5 93.32 -2.6 0.47...
*May 12, 2012 by Need Help!!!*

**statistics**

given that x~n(300,15), find the 70th percentile.
*March 2, 2011 by Anonymous*

**Statistics**

The following data set is the GPAs of the students in a statistics class. 1.93, 1.99, 2.00, 2.04, 2.12, 2.34, 2.55, 2.55, 2.75, 2.75, 2.80, 2.80, 2.85, 3.02, 3.12, 3.22, 3.31, 3.33, 3.45, 3.69 What percentile is a GPA of 2.34? A. About the 6th B. About the 15th C. About the ...
*September 23, 2014 by Amy*

**statistics**

Assume the body temperture of healthy adults are normally distributed with a mean of 98.20 degrees F and a standard deviation of 0.62 degrees F... a. If you have a body temperture of 99.00 degrees F, what is your percentile score? b. Convert 99.00 degrees F to a standard score...
*May 8, 2010 by Jamie*

**statistic**

Identify the level of measurement for the following? 1)What state/country were you born? 2)What is the temperature outside rigth now? 3)Rank all of the courses you are currently.The class you look most forward to taking will be rank one ,next two ,and so on . what is the rank ...
*July 13, 2011 by mike *

**adult education**

The 29th percentile is greater than the 30th percentile. yes or no
*May 1, 2010 by Michelle*

**statistics**

given 100,90,80,75,70,60,30,25,5,4 what score corresponds to the 70th percentile?
*November 11, 2011 by Dee*

**statistics**

how to find the tatge cf when using the score at a given percentile ?
*February 24, 2013 by gwendolyn*

**Stats...is this correct??**

Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be normally distributed. A person who scores 68 on this scale has what percentile rank within the population? z = (68-100)/16 z = -32/16 = -2 So would it be ...
*October 18, 2011 by Jen*

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