Friday
September 4, 2015

Homework Help: Math: Statistics

Recent Homework Questions About Statistics

Statistics
Among the population of criminal justice students, the average score on the final exam was 74, with a standard deviation of 11.6. What is the probability of randomly selecting a student who earned an A (90 or better)?
Friday, February 27, 2015 by Maddie

Statistics
1200 high school freshman were randomly selected for a national survey. Among survey participants, the mean grade-point average was 2.8, and standard deviation was 0.6. What is the margin of error, assuming a 95% confidence level?
Friday, February 27, 2015 by Isabel

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 ...
Friday, February 27, 2015 by Elena

Statistics
Suppose we would like to estimate the mean amount of money spent on books by students in the fall semester. We have the following data from 400 randomly selected students: mean=$205 and s=$40. Assume that the amount spent on books by students is normally distributed. Compute a...
Friday, February 27, 2015 by Elena

Statistics
Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected days. Define a new random variable w by w = x + y, the sum of the two waiting times. The set of possible values for w is the interval from 0 to 2a (...
Friday, February 27, 2015 by Abbey

statistics
Heights of men on a baseball team have a bell-shaped distribution with a mean of 169 cm and a standard deviation of 9 cm. Using the empirical rule, what is the approximate percentage of the men between the following values? a. 151 cm and 187 cm. b. 160 cm and 178 cm. Please ...
Thursday, February 26, 2015 by slomomo

statistics
In a course there is a midterm exam, worth 40% of the course grade, and a final exam worth 60%. On the midterm the mean grade was 80 with a standard deviation of 10, and on the final the mean was 75 with a standard deviation of 15. The correlation between the two exams is 0.6...
Wednesday, February 25, 2015 by jess

STATISTICS
a team of 3 is to be chosen from 4 boys and 5 girls. if X is the random variable of the number of girls in the team find the Expected variable X. E(X)
Wednesday, February 25, 2015 by KALAN ENILEOHS

statistics/normal distribution
If np is greater than or equal to 5, and nq is greater than or equal to 5, estimate P(fewer than 8) with n =14 and p = 0.6 by using the normal distribution as an approximation to the binomial distribution; if np < 5 or nq < 5, then state that the normal approximation is ...
Wednesday, February 25, 2015 by slomomo

Statistics
What is the sample variance (not the population estimate) for: 1, 1, 2, 3, 5, 8.
Tuesday, February 24, 2015 by Alicia Estrada

Statistics
In a nominal data set, what is the preferred measure of central tendency?
Tuesday, February 24, 2015 by Luis

statistics
I know I posted this earlier but I found the answer I just don't know the steps to find it. Use technology to find the probability associated with the cumulative area to the left of the z score of the adjusted value of x, 5.5. P(z < - 0.5546) = 0.2896 If you could just ...
Tuesday, February 24, 2015 by Bradman0317

Statistics
A vending machine pours an average of 8.0 oz of coffee with a standard deviation of 0.2 oz if it is functioning properly. An inspector wants to take 16 cups of coffee from the machine to see if the machine is functioning well or not. He wants to have a significance level of 4...
Tuesday, February 24, 2015 by Daniel

statistics
use technology to find the probability associated with the cumulative area to the left of the z score of the adjusted value of x, 5.5 P(z< - 0.5546) = Im not sure if I need to look a z score table or how to redo this formula. I know the steps except for this. Please help.
Tuesday, February 24, 2015 by Bradman0317

Statistics and Probability
I took a large sample of households in a city, and based on that, estimate the standard deviation of the income for all households in the city is $800. In order to make a desired conclusion about the income for all the households in the city, I want the sample mean for another...
Tuesday, February 24, 2015 by Macy

Statistics
I took a large sample of households in a city, and based on that, estimate the standard deviation of the income for all households in the city is $800. In order to make a desired conclusion about the income for all the households in the city, I want the sample mean for another...
Tuesday, February 24, 2015 by Macy

statistics
If np is more or equal to 5 and nq is more or equal to 5, estimate P(fewer than 6) with n = 14 and p = 0.5 by using the normal distribution as an approximation to the binomial distribution; if np < 5 or nq < 5, then state that the normal approximation is not suitable. ...
Tuesday, February 24, 2015 by Bradman0317

statistics
A box contains 3 red marbles and 7 white marbles.A marble is drawn from the box,and a marble of the other color is then put into the box.A second marble is drawn from the box.Find the probability that the second marble is red.if both marbles were of same color.what is the ...
Tuesday, February 24, 2015 by collette

statistics
A comprehensive study of orphaned children is conducted in every orphanage in Australia. A scale called the Capacity for Attachment Scale is given to all orphaned children. The mean (μ) of the scale is 72 and the standard deviation (σ) is 13. Assuming that the scores...
Monday, February 23, 2015 by Alicia Estrada

statistics
If a fowl is treated, probability of dying is 1/10 while if not treated the probability is 7/10 calculate the probability that, a fowl picked at random from the 36 fowl is (i) Treated with the drug and will die (ii) Not treated with the drug and will die (iii) Not treated with...
Sunday, February 22, 2015 by kudu

statistics
The water supply in a town depends entirely on two pumps. A and B. The probability of pump A filling is 0.1 and the probability of pump B failing is 0.2. Calculate the probability that (a) Both pumps are working (b) There is no water in the town (c) Only one pump is working (d...
Sunday, February 22, 2015 by kudu

statistics
About 71% of dog owners buy holiday presents for their dogs. Suppose n = 4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog holiday presents. Round to four decimal places.
Sunday, February 22, 2015 by m

statistics
A cell phone service provider has selected a random sample of 20 of its customers in an effort to estimate the mean number of minutes used per day. The results of the sample included a sample mean of 34.5 minutes and a sample standard deviation equal to 11.5 minutes. Based on ...
Sunday, February 22, 2015 by timothy kendricks

statistics
Consider the following situation, and answer each of the following multiple choice questions. In your write-up, just list the sub-question letter (A-J) and your answer – no need to restate the question or to justify your answer. Situation: You have 400 data points, which ...
Sunday, February 22, 2015 by marie

statistics
a hat contains 40 marbles, 16 of which are red and are green. if one marble is randomly selected out of this hat, what is the probability that this marble is red?
Sunday, February 22, 2015 by Anonymous

statistics
Factories A, B and C produce computers. Factory A produces 3 times as many computers as factory C, and factory B produces 6 times as many computers as factory C. The probability that a computer produced by factory A is defective is 0.02, the probability that a computer ...
Sunday, February 22, 2015 by cindy

statistics
A consumer advocacy group claims that the mean amount of juice in a 16 ounce bottled drink is not 16 ounces, as stated by the bottler.
Saturday, February 21, 2015 by Anonymous

Statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported the results of an ...
Saturday, February 21, 2015 by Tamcia

statistics
A student government representative at a local university claims that 60% of all the undergraduate students favor a move to Division I in college football. A simple random sample of 250 undergraduate students is selected. What is the probability that the sample proportion ...
Saturday, February 21, 2015 by LO

statistics
Heights of women have a bell-shaped distribution with a mean of 158 cm and a standard deviation of 8 cm. Using Chebyshev’s theorem, what do we know about the percentage of Women with heights that are within 3 standard deviations of the mean. What are the minimum and ...
Saturday, February 21, 2015 by slomomo

govt
what is the correct apa style that i would use in a biblography for the u.S. bureau of labor statistics (february 2012)
Friday, February 20, 2015 by toxie

Statistics
A student guesses blindly on a 20-question multiple choice test. If each question has 4 answer choices (only one of which is correct), what is the probability that the student will answer exactly 10 questions correctly?
Friday, February 20, 2015 by Sierra

statistics
Determine the critical region and the critical values used to test the following null hypotheses: a. Ho: μ = 55 (≥), Ha: μ < 55, α = 0.02 b. Ho: μ = −86 (≥), Ha: μ < −86, α = 0.01 c. Ho: μ = 107, Ha: μ &#...
Friday, February 20, 2015 by Jennie

Statistics
Below are the numbers of games played in the World Series from 1903 to 2012. Find the mean, variance and standard deviation. Games played Probability 4 0.186 5 0.231 6 0.203 7 0.341 8 0.039
Friday, February 20, 2015 by E.man

Statistics
For $5 you can buy a ticket for a drawing for a prize of $2,000. The probability of winning the prize is 0.001. How much money to you expect to win
Friday, February 20, 2015 by Emmanuel

statistics
A candy company claims that 13% of its plain candies are orange, and a sample of 100 such candies is randomly selected. Find the mean and the standard deviation for the number of orange candies in such groups of 100. I do not get the formula to figure this out Someone, please ...
Friday, February 20, 2015 by slomomo

statistics
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.42. The table on the right describes the probability of having x number of girls. Determine whether the table describes a probability ...
Friday, February 20, 2015 by slomomo

statistics
When drawing a histogram, it is important to a. eliminate the extremes to minimize the effect of skewness. b. choose class intervals, so they all have the same number of observations c. make sure that the mean and the median fall in the same class interval, so that the correct...
Friday, February 20, 2015 by joe

statistics
A brand has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected customers, what is the probability that exactly 5 of the selected consumers recognize the brand name? I need the correct formula in...
Friday, February 20, 2015 by slomomo

statistics
Estimate the multiple linear regression equation relating number of cups of coffee per week, female sex, and number of hours of exercise per week, considered simultaneously, to GPA. Consider GPA the dependent, or outcome variable. my answer: GPA= 7.301 -1.649 (female sex) -0....
Friday, February 20, 2015 by sara

Statistics
Use the 5-step hypothesis testing framework to answer the following 2 questions: Step One: Stating the hypothesis Step Two: Choosing the appropriate test statistic Step Three: Developing a decision rule Step Four: Calculating the value of the test statistic Step Five: Stating ...
Thursday, February 19, 2015 by Shayna

statistics
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.46. The table describes the probability of having x number of girls.Determine whether the table describes a probability distribution. If...
Wednesday, February 18, 2015 by slomomo

statistics
Five males with a particular genetic disorder have one child each. the random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table describes a probability distribution. If it does, find the mean and standard ...
Wednesday, February 18, 2015 by slomomo

statistics
A candy company claims that 11% of its plain candies are orange, and a sample of 200 such candies is randomly selected a. find the mean and standard deviation for the number of orange candies in such groups of 100. use the formulas below to calculate the mean and standard ...
Wednesday, February 18, 2015 by slomomo

statistics
Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean μ and standard deviation σ. Also, use the range rule of thumb to find the minimum usual value &#...
Wednesday, February 18, 2015 by slomomo

Statistics
A population has u=100 and o=20. If you select a single score from this population, on average, how close would it be to the population mean? Explain your answer. I don't understand the question itself. Please help.
Tuesday, February 17, 2015 by Luis

statistics
In testing the hypotheses H0: = 0.40, H1: > 0.40 at the 5% significance level, if the sample proportion is .45, and the standard error of the sample proportion is .05, the appropriate conclusion would be
Tuesday, February 17, 2015 by Margot

statistics
S) Suppose we want to determine the (binomial) probability (p) of getting 5 heads in 15 flips of a 2-sided coin. Using the Binomial table in the appendix of the text, what values of n, x, and p would we use to look up this probability, and what would be the probability? n=...
Tuesday, February 17, 2015 by slomomo

Statistics
Approximately 6% of the male population is color blind. If a random sample of 250 male adults is tested for color blindness, what is the probability that at least 10 but no more than 20 will be color blind?
Tuesday, February 17, 2015 by Dmitivch

Statistics
Can someone please separate this terms by categorical variable and numerical variable: Region Population Growth Rate Adult Literacy Measles Immunity Male Life expectancy Female life expectancy Male Healthy Average Life Expectancy Female Healthy Average Life Expectancy
Monday, February 16, 2015 by Skyler

statistics
From Lab 3, Problem 2 2. The data set magnet is from an experiment to see the effect of voltage and number of turns on the magnetic force of an electromagnet. The experimenters expected to see a limit to which the number of turns could increase the force. (This is actually a ...
Monday, February 16, 2015 by John

Statistics
Anger and Snap Judgments Read the article entitled “Anger Can Cause Snap Judgments” and answer the following questions. ANGER CAN CAUSE SNAP JUDGMENTS Anger can make a normally unbiased person act with prejudice, according to a forthcoming study in the journal ...
Monday, February 16, 2015 by Lara

statistics
if you earned a 17 on a quiz what would your score indicate the best performance a. x=15 and s=2.4 b. x=15 and s=2.1 c. x=17 and s=2.4 d. x=17 and s=2.1
Sunday, February 15, 2015 by Dana

statistics
A teacher is interested in finding out how many hours a day a college student at Monroe Community College exercises. The teacher randomly chooses 1000 college students and asks them, “How many hours do you exercise?” Explain whether there could be any bias in the ...
Sunday, February 15, 2015 by Dana

Statistics
A linear regression of price on square footage of homes for sale found the equation price = 30275 + 144*sqft. In this equation, the slope means A. a house with no square feet will cost $30,275. B. for every 144 square feet, average price goes up $30,275. C. for every square ...
Sunday, February 15, 2015 by Macy

statistics
Listed below are the duration's (in hours) of a simple random sample of all flights of a space shuttle program. Find the range, variance, and standard deviation for the sample data. Is the lowest duration time unusual? Why or why not? 71, 100, 237, 199, 164, 269, 193, 379...
Friday, February 13, 2015 by slomo

statistics
Below are 36 sorted ages of an acting award winner. Find P10 converting a percentile to a data value 17 21 22 22 22 23 24 30 31 33 37 38 38 42 43 44 45 47 47 50 51 53 54 54 54 54 55 60 64 65 67 69 71 71 72 76 78 I am not sure how this system works and I searched my textbook ...
Friday, February 13, 2015 by slomo

Statistics
above average warmth extended over the east and southeast on Jan.13, 2005.The days forecasted high temperatures in four cities in the affected area were as follows: Burlington, Vt. 55 degrees F, Durham, N.C. 74 degrees F, Williamsburg, Va. 74 Degrees F., and Augusta Ga., 75 ...
Thursday, February 12, 2015 by Phyiss

statistics
One of the tallest living men has a height of 263 cm. One of the tallest living women is 245 cm tall. Heights of men have a means of 177 cm and a standard deviation of 8 cm. Heights of women have a mean of 163 cm and a standard deviation of 4cm. Relative to the population of ...
Wednesday, February 11, 2015 by slomo

statistics
Listed below are the duration's (in hours) of a simple random sample of all flights of a space shuttle program. Find the range, variance, and standard deviation for the sample data. Is the lowest duration time unusual? Why or why not? 71 100 237 199 164 269 193 379 252 233...
Wednesday, February 11, 2015 by slomo

statistics
Identify the level of measurement of the data and explain what is wrong with the given calculation. In a set of data, movie ratings are represented as 100 for 1 star, 200 for 2 stars, and 300 for 3 stars. the average (mean) of the 527 movie ratings is 231.2 Don't get this ...
Tuesday, February 10, 2015 by slomo

statistics
A polling company reported that 53% of 2302 surveyed adults said that they play basketball.a. what is the exact value that is 53% of 2302? b. could the result from part (a) be the actual number of adults who said that they play basketball? why or why not? c. What could the ...
Tuesday, February 10, 2015 by slomo

Statistics
The time to fly between New York City and Chicago is normally distributed with a mean of 180 minutes and a standard deviation of 17 minutes. What is the probability that a flight is more than 200 minutes?
Tuesday, February 10, 2015 by Susan

statistics
The response to a question has three alternatives: A, B, and C. A sample of 120 responses provides 52 A, 29 B, and 39 C responses. Show the frequency and relative frequency distributions (use nearest whole number for the frequency column and 2 decimal for the relative ...
Tuesday, February 10, 2015 by Anonymous

statistics
An automotive manufacturer has selected 10 car seats to study the Rockwell hardness of the seat recliner mechanism. A sample of 8 has an average of 44.795 and a standard deviation of 0.402. At 95% percent confidence level, what is the interval for the population mean?
Monday, February 9, 2015 by t

statistics
A sample distribution (closely approximating a normal distribution) of a critical part dimension has an average of 11.85 inches and a sample standard deviation of 1.33 inches. The lower specification limit is 11.41 inches. The upper specification limit is 12.83 inches. What ...
Monday, February 9, 2015 by t

statistics
A manufacturer of light bulbs has sampled 40 bulbs in order to determine the population mean life of the bulbs. The sample mean was 1,200 hours with a standard deviation of 100. The manufacturer would like to know, with 95% confidence, the interval values for the population mean
Monday, February 9, 2015 by t

math (statistics)
The following table shows the percentage of individuals in each age group who use an online tax program to prepare their federal income tax return. AGE ONLINE TAX PROGRAM (%) 18-34 16 35-44 12 45-54 10 55-64 8 65+ 2 Suppose a follow-up study consisting of personal interviews ...
Monday, February 9, 2015 by sarah

Statistics
Suppose we have yo estimate the average number of purchases in a given hour in a given hour at a convenient store. Using this example describe in your own words how you would go about this determining this average through: A.) Drawing a random sample B.) A Systematic sample C...
Monday, February 9, 2015 by Phyiss

statistics
a researcher weighs each individual in a sample of 25 laboratory rats and calculates the average weight for the group. the average weight is an example of a ____ .
Sunday, February 8, 2015 by Anonymous

statistics
Suppose we want to estimate the average number of purchases in a given hour in a local convenience store. Using this example describe in your own words how you would go about determining this average through: A.) Drawing a random sample: Drawing a random sample would be the ...
Sunday, February 8, 2015 by slomo

statistics
A coin is tossed 3 times. Find the probability that all the 3 are heads (A) if it is known that the first is heads (B) if it is known that the first 2 are heads (C) if it is known that the 2 of them are heads
Saturday, February 7, 2015 by Joseph

writting skills
The World Almanac is a book of      A. facts and statistics. B. living notable Americans. C. synonyms. D. articles published in magazines.  
Friday, February 6, 2015 by Anonymous

statistics
Describe whether the following study would most likely be “observational” or “experimental”, and why it would be so. * Mystery shoppers monitor the preferences at a shopping mall It seems the obvious answer would be observational because, "mystery ...
Friday, February 6, 2015 by slomo

Statistics
In a study of pleas and prison sentences, it is found that 40% of the subjects studied were sent to prison. Among those sent to prison, 20% chose to plead guilty. Among those not sent to prison, 10% chose to plead guilty. 3.3.a (0.5 pt) If a study subject is randomly selected...
Friday, February 6, 2015 by joanne

statistics
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a. What is the population ...
Friday, February 6, 2015 by slomo

Statistics HELP
There are two bags each containing red balls and yellow balls. Bag A contains 1 red and 4 yellow balls. Bag B contains 3 red and 13 yellow balls. Alva says that if we choose one bag and draw one ball from that bag you should always choose bag B if you are trying to draw a red ...
Friday, February 6, 2015 by Desmond

Statistics
An experiment consists of tossing a fair coin twice. The student reasons that there are three possible outcomes: two heads, one head and one tail, or two tails. Thus,P(HH) 1/3
Friday, February 6, 2015 by Desmond

statistics
the standard score for hours spent online at home for Minnesotans was 2.84. The mean equals 8.9 hours. Approximately how many hours do Minnesotan adults spend online at home.
Wednesday, February 4, 2015 by bobby

Math, Statistics
I know its 1 - P(5/128) but I dont think its correct?? I flip a fair coin seven times in a row. What is the probability that I get at most five heads?
Wednesday, February 4, 2015 by joanna

statistics
A company has four production sections viz., S1, S2, S3 and S4 which contribute 30%, 20%, 28% and 22% of the total output. It was observed that those sections respectively produced 1%, 2%, 3% and 4% defective units. If a unit is selected at random and found to be defective, ...
Wednesday, February 4, 2015 by Harry

statistics
Produce a 99.9 % confidence interval for the population mean body temperature of a healthy male. Then do the same for the population of healthy females. Round your answers to three decimal places.
Tuesday, February 3, 2015 by j

Statistics
Pop. Mean =87 Standard deviation=8 Sample size=64
Monday, February 2, 2015 by Denise

Criminal Justice/Judicial System
According to the Justice Department's Bureau of Justice Statistics, ________ of every 100 murder and nonnegligent manslaughter defendants are convicted. A. 17 B. 68 C. 46 D. 31 I think it's B., but not sure
Monday, February 2, 2015 by Pat

statistics
A professor gave an aptitude test to a class of psychology students and computed the mean, median, and mode for the test scores. Which of the following statements cannot be an accurate description of the scores? -All of the above statements are false. -The majority of the ...
Sunday, February 1, 2015 by Sally

Statistics
The height of a bluebird was measured in centimeters. If the ruler reads 10.599 centimeters, what is the lower real limit of the bluebird's height? I know the lower limits of 10 are 9.5 or 10.5 after we go further I don't understand how to get the rest of the real ...
Saturday, January 31, 2015 by Anonymous

statistics
The following contingency of frequencies is based on a 5-year study of fire fatalities in Maryland. For purposes of clarity, columns and rows are identified by the letters A-C and D-G, respectively. Blood Alcohol Level of Victim A B C Age 0.00% 0.01-0.09% ¡Ý0.10% ...
Saturday, January 31, 2015 by jess

Statistics
The following contingency of frequencies is based on a 5-year study of fire fatalities in Maryland. For purposes of clarity, columns and rows are identified by the letters A-C and D-G, respectively. Blood Alcohol Level of Victim A B C Age 0.00% 0.01-0.09% ¡Ý0.10% ...
Saturday, January 31, 2015 by jcukane

Statistics Helps
Carter has a large marble collection. Carter knows that he has exactly 20 blue marbles in his collection, but does not know how many marbles he has in all. Carter mixes up his marbles and randomly selects 40 marbles. Of the 40 marbles that he chose, 4 were blue. How many ...
Thursday, January 29, 2015 by Desmond

statistics
my question is: So if the chance is 1 in 17,259,390 of winning, what is the expected value of the win? How would I do this problem. Hope you can help. Thank you
Wednesday, January 28, 2015 by Mary Ann

english
Common Sense Media's research report shows kids are reading less than ever. Discover the startling statistics -- and what you can do to get your kids back into books. Do you have a teen who hardly reads? You're not alone. Common Sense Media's latest research report...
Tuesday, January 27, 2015 by stacyy09

Statistics
Find the to left of z=2.165. Please example how to find on chart
Monday, January 26, 2015 by Denise S

psychlogical statistics
A random selection of files from a student counseling center revealed the following reasons why college students seek services: Mental health issues - 25 Learning/school issues - 15 Relationship issues - 5 Other - 5 What is the probability that if we pulled another student ...
Saturday, January 24, 2015 by theresa

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

statistics
In throwing a pair of dice The event of getting a sum of 5 in the upturned faces of dice.
Saturday, January 24, 2015 by flor

statistics help please
The employment percentages for men versus women in a computer company last year were 80% and 40%, respectively. At the beginning of this year, they had 150 men and 60 women currently hired. The owner of the company wishes to check their hiring practices and ensure that the ...
Friday, January 23, 2015 by steph

statistics
The employment percentages for men versus women in a computer company last year were 80% and 40%, respectively. At the beginning of this year, they had 150 men and 60 women currently hired. The owner of the company wishes to check their hiring practices and ensure that the ...
Friday, January 23, 2015 by statistics help

Statistics
Subtract to find the area to the right of z=1.23: 1-0.8907=?
Friday, January 23, 2015 by Denise S

Math (Statistics)
What causes experimental probability to match theoretical probability?
Friday, January 23, 2015 by Rachel

statistics
suppose a sample of 2404 tenth graders is drawn.Of the sampled, 601 read at or below the eighth grade level. using the data, construct the 98% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level.
Friday, January 23, 2015 by kyle

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Homework Help: Math

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