Tuesday

April 21, 2015

April 21, 2015

Number of results: 16,797

**Math**

The college president asks the statistics teacher to estimate the average age of the students at their college. How large a sample is necessary? The statistics teacher decides the estimate should be accurate within half year and be 92% confident. From a previous study, the ...
*September 21, 2014 by Don*

**Statistics**

What percentage of college students are attending a college in the state where they grew up? Let p be the proportion of college students from the same state as that in which the college resides. If no preliminary study is made to estimate p, how large a sample is needed to be ...
*August 1, 2012 by Anonymous*

**statistics**

Do students at various colleges differ in how sociable they are? Twenty-Five students were randomly selected from each of three colleges in a particular region and were asked to report on the amount of the time they spent socializing each day with other students. The results ...
*July 18, 2009 by Jerry*

**statistics**

At a small college it is known from previous years that 35% of all college freshman start in college algebra. The new freshman class has 100 students in it, What is the probability that between 35 and 42 freshman will start in college algebra? Is it reasonable to approximate ...
*March 23, 2012 by lola*

**math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
*May 6, 2012 by jennifer*

**Math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
*June 21, 2012 by Jameson*

**Math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
*June 21, 2012 by Jameson*

**math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at college. Give the 95% confidence interval.
*June 5, 2014 by Erma*

**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 data the ...
*February 15, 2015 by Dana*

**college pre statistics**

consider the following sample statistics from a population that is aproximatly normal. n=15, s= 7.92,level of confidence is 99 % Calculate the margin of error( round to the nearest hunderth)
*March 11, 2009 by Angela*

**college**

describe how statistics can be important and influential in the nursing profession. Provide at least two examples where you have observed statistics to contribute positively to the needs of the customer.
*October 19, 2010 by Elena*

**statistics**

Of the 300 employees that were surveyed, 200 had college degrees, 50 were single, and 30 were both single and had college degrees. What is the probability that an employee chosen at random is single or has a college degree?
*April 6, 2010 by sam*

**Math-Statistics**

A marketing research company needs to estimate which of two soft drinks college students prefer. A random sample of n college students produced the following 98% confidence interval for the proportion of college students who prefer drink A: (0.384, 0.424). Identify the point ...
*November 28, 2009 by Ashley*

**statistics**

based on a random sample of 640 college students, the mean amount of sleep college students. construct a 95% confidence interval for the mean amount of sleep per night for college studenrs.
*November 13, 2011 by jamie brice*

**college statistics**

assume the population of heights of female college students mean of 64.37 inches standard deviation of 6,26 in and random sample of 74 find p(x>65.25)B. find p(x>65.25)c. why is formulas required to solve a different than c.
*June 14, 2012 by melba*

**college**

Do students at various colleges differ in how sociable they are? Twenty-five students were randomly selected from each of three colleges in a particular region and were asked to report on the amount of time they spent socializing each day with other students. The results for ...
*December 21, 2009 by Sandra*

**Statistics**

I am not sure how to even get started on this question could someone help please. A college advisor wants to estimate the mean annual income of all college students who graduated last year. It is believed that the incomes follow a normal distribution with population standard ...
*December 12, 2011 by Crystal*

**Statistics**

In the population of typical college students, _ 5 75 on a statistics final exam _X 5 6.42 . For 25 students who studied statistics using a new technique, X 5 72.1. Using two tails of the sampling distribution and the .05 criterion: (a) What is the critical value? (b) Is this ...
*February 14, 2014 by Anonymous*

**Statistics**

linear correlation between the number of years in college versus average pay. average pay= 1,000 + 15,000x where x is the number of years in college. What would your average pay be if you were in college 2 years based on the model?
*August 28, 2013 by Mary*

**Statistics**

linear correlation between the number of years in college versus average pay. average pay= 1,000 + 15,000x where x is the number of years in college. What would your average pay be if you were in college 2 years based on the model?
*August 28, 2013 by Mary*

**Statistics**

A poll was taken of a random sample of 1189 college students. Of these students, 789 reported that they had a drinking binge (more than 10 drinks in an evening) in the past month. Select the most believable conclusion. A. About 66.358% of college students indulged in binge ...
*September 11, 2014 by Amy*

**statistics**

In a random sample of 112 State College students, 41 students reported being current smokers. a) Calculate the 95% confidence interval for the proportion of State College students who smoke.
*May 7, 2012 by Anonymous*

**statistics**

In a random sample of 112 State College students, 41 students reported being current smokers. a) Calculate the 95% confidence interval for the proportion of State College students who smoke.
*May 7, 2012 by Anonymous*

**Math**

Identify the misuse or misrepresentation of statistics: “60% of all college students watch less than 2 hours of television per day.” This conclusion was reached by a college student after she had questioned 520 randomly selected students exiting the library. What is wrong with...
*September 27, 2009 by Matt*

**Statistics**

In a random sample of 50 undergraduate students at a college, it was found that 44 students regularly access social networking websites from their college library. What is the margin of error for the true proportion of all undergraduates who access social networking sites from...
*May 19, 2014 by Caitlyn*

**eng02**

Assignment: Incorporating Statistics, Graphs, and Illustrations Resources: Incorporating Statistics, Graphs, and Illustrations; Creating Tables tutorial; Axia College Writing Resources Web Site; and Axia College’s Writing Style Handbook Due Date: Day 7 [...
*May 25, 2009 by carol*

**Statistics**

Based on information from Harper's Index, 37 out of a random sample of 100 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of 100 Americans who did attend college, 41 claim that they believe in extraterrestrials. At the ...
*April 23, 2013 by Torri*

**Probability and Statistics**

The ACT scores of applicants to college are approximately normally distributed with a mean of 20.3 and a standard deviation of 3.1. If a random sample of 20 applicants to college is chosen find the probability that their average ACT score will be 19 and 21.
*April 29, 2012 by Kim*

**Engineering Statistics**

"A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of the prices of all college textbooks is $9.50. Suppose the prices of all college textbooks have a normal distribution. What is the mean price of all ...
*October 11, 2011 by Christian*

**statistics**

Thirty percent of the students in a high school face a disciplinary action of some kind before they graduate. Of those students, 40% go on to college. Of the 70% who do not face a disciplinary action, 60% go on to college. What percent of the students from the high school go ...
*July 21, 2011 by hello*

**Statistics**

foofy computes the correlation between an individual's physical strength and his or her college grade poing average. Using a computer, the correlation for a sample of 2000 people is r(1998)=+.08, p=<.0001. she claims this is a useful tool for predicting which college ...
*July 10, 2011 by K*

**Math- Statistics **

Suppose 60% of adults have a college degree. If I take a random sample of 80 adults, what is the probability at least 50% of them have a college degree?
*May 5, 2013 by Juliet*

**m/c**

Which of the following refers to when a researcher gathers data from a sample and uses the statistics generated to reach conclusions about the population from which the sample was taken? inferential statistics holistic statistics conclusive statistics descriptive statistics is...
*May 20, 2010 by Thara!*

**statistics**

College students average 7.8 hours of sleep per night with a standard deviation of 45 minutes. If the amount of sleep is normally distributed, what proportion of college students sleep for more than 9 hours?
*February 23, 2010 by Anonymous*

**statistics**

60% of the students at a college are female. If 13 students at that college are selected random, find the probability that 5 or 6 students will be female
*March 6, 2011 by jill*

**statistics**

In the past a certain college has found that 35% of the students will grad within 4 years. A random sample of 450 students at this college is taken and going to be followed until graduation. A. What is the sampling distribution of the statistic of interest? B. What is the ...
*June 12, 2011 by danny*

**statistics - math**

Sixty percent of the students at a particular community college are female. If 13 students at that community college are selected at random, find the probability that 5 or 6 students will be female. Use Appendix Table or Excel function for Binomial distribution. [Remember from...
*December 4, 2010 by tanya*

**statistics**

The mean GPA (grade point averagE. of all male students at a college is 2.77 and the mean GPA of all female students at the same college is 2.89. Suppose we take one sample of 40 male students and another sample of 50 female students from this college. What is the mean of the ...
*January 30, 2009 by Lee*

**Statistics**

In a certain city, there are 10,000 persons age 18 to 24. A simple random sample of 500 such persons is drawn, of whom 200 turn out to be currently enrolled in college. Find a 90% con¯dence interval for the percentage of persons age 18 to 24 in the city who are attending college.
*May 15, 2011 by Teddy*

**statistics**

suppose that 70% of all college students love math. in a random sample of 8 college students, let x be the number of students who love math.find p(x=6)
*November 18, 2014 by harry big*

**statistics**

Assume that the population of heights of female college students is approximately normally distributed with mean m of 66 inches and standard deviation s of 4.00 inches. Show all work. (A) Find the proportion of female college students whose height is greater than 65 inches. (...
*February 12, 2012 by Tiffany*

**statistics**

Use the given confidence level and sample data to find a confidence interval for the population standard sigma. Assume that a simple random sample has been selected from a population that has a normal distribution. salaries of college graduates who took a geology course in ...
*December 29, 2011 by rich*

**english**

college graduation rates in USA and education statistics.
*December 10, 2012 by maria*

**college statistics**

how many ways can a 3 person committee be formed from 12 people
*November 5, 2014 by robin*

**Statistics**

From random sample of 200 college students, 40 students indicated that they smoke cigarettes. Use the information from the sample to calculate a 95% confidence interval for the population proportion of college students that smoke cigarettes (round to nearest hundredth). A. (0....
*May 18, 2012 by Mary*

**Math/Statistics**

Of 29 college juniors at State University, 13 preferred pepperoni pizza, 11 preferred supreme, and 5 preferred cheese. If we picked a college junior at State University at random, what is the probability that he or she would prefer cheese?
*May 1, 2011 by Rodney*

**statistics**

Conduct a chi square analysis to determine whether sex and year in college are related. I have tried to submit the data but I can't seem to make the submission work. For my data I used 20 males and 20 females. and for the year in college I have 10 freshman, 10 sophomore, 10 ...
*July 31, 2014 by angela*

**Statistics**

The age distribution of students at a community college is given below. Age (years) Number of students (f) 11) Over 35 26 1103 A student from the community college is selected at random. Find the conditional probability that the student is at most 35 given that he or she is at...
*October 1, 2014 by Kelli*

**College Math**

How are statistics and empirical probablity related? What is a specific scientific decision?
*March 27, 2009 by Vonsell*

**college**

Incorporating Statistics, Graphs,and Illustration Assignment My topic is about drugs
*May 10, 2010 by Skyla*

**Statistics**

The standard deviation of GPAs (grade point averages) of all male students at a college is .35 and the standard deviation of GPAs of all female students at the same college is .34. Suppose we take one sample of 40 male students and another sample of 50 female students from ...
*October 22, 2010 by Lisa*

**statistics**

The income of college students is normally distributed with a mean income per year is $12,000 and a standard deviation of $6,000. a)If we randomly sample 25 college students, what is the probability that the average income of our sample is less than $4,000? b)If we randomly ...
*March 1, 2011 by Maddie Liguori*

**Statistics**

For some reason I didn't get the entire questions submitted on the previous email. I really need help with the last part - the part about the crusty old professor. THANKS. K Students in a very large first year college class at a prestigious college were asked how many minutes ...
*August 5, 2007 by Kayse*

**statistics**

Pleas HeLp!!!!!!!!!! A random sample of the test scores of 100 applicants for college entry at a large junior college showed a mean score of 72.6. Determine a 99%, 95%, and 90% confidence interval for the m mean score of all applicants at the junior college. Assume the ...
*September 17, 2011 by courntey*

**statistics**

To display the major of a sample of college students, which graph would be the best choice?
*January 23, 2011 by Anonymous*

**statistics college**

find the range standard deviation and variance for following sample data 2,11,81,29,22,59,78,71,21,43,99,12,38,74,56,81
*May 22, 2012 by melba*

**Math Help**

According to statistics gathered as part of a research project by a group of statistics students on the college campus, 376 out of the 439 deaths attributed to lightning strikes were male. If all of the names of the deceased were placed into a drum and one (1) name was ...
*September 22, 2011 by Jamie*

**statistics**

A sample survey interviews an SRS of 263 college women. Suppose (as is roughly true) that 75% of all college women have been on a diet within the past 12 months. Using the Normal approximation, what is the probability (±0.001) that 82% or more of the women in the sample have ...
*May 2, 2013 by dais*

**statistics**

12) The regression equation Credits = 15.4 - .07 Work was fitted from a sample of 21 statistics students. Credits is the number of college credits taken and Work is the number of hours worked per week at an outside job. A) Interpret the slope. B) Is the intercept meaningful? ...
*September 27, 2010 by kim*

**Statistics(math)**

(20.47 S-AQ) A sample survey interviews an SRS of 252 college women. Suppose (as is roughly true) that 71% of all college women have been on a diet within the past 12 months. Using Normal approximation, what is the probability (±0.001) that 77% or more of the women in the ...
*June 7, 2013 by Kelsey*

**statistics**

The final rankings of the top 20 NCAA college basketball teams are an example of which level of measurement?
*December 6, 2010 by Anonymous*

**college statistics**

find the normal approximation for the binomial probability that x=5 where n=14 and p=0.3 compare this to the value of p(x=5) found in table 2
*June 5, 2012 by melba*

**statistics**

In an election for student council president at Russell Sage College, 80 students were polled and asken for whome the planned to vote. the following results of the poll were Allison 22, Emily 18, Kimberly 20 Johanna 14, Other 6. If one student from Russell Sage College is ...
*April 5, 2010 by Krystle*

**Statistics **

One survey by the American Medical Association showed that among 785 randomly selected people who completed four years of college, 81.7% do not smoke. Use a 0.01 significance level to test the claim that people who completed four years of college are more likely to not smoke ...
*April 27, 2014 by Parker*

**Statistics**

One survey by the American Medical Association showed that among 785 randomly selected people who completed four years of college, 81.7% do not smoke. Use a 0.01 significance level to test the claim that people who completed four years of college are more likely to not smoke ...
*April 27, 2014 by Allison*

**Statistics**

I can do problems like this if the mean and standard deviation was given but what do I do if it's like this When asked whether they drink alcohol or not, 79 out of 441 college students said that they did not. Construct a 90% CI for the proportion of all college students that ...
*May 6, 2010 by John*

**Statistics**

2. In a given year the Murphy College admissions office accepts applications from students, who are then either accepted or not-accepted. Accepted students may or may not decide to attend Murphy College. Suppose the scores on a certain entrance exam for applicants of Murphy ...
*January 12, 2011 by Sam*

**AP Statistics**

If you know that a randomly chosen person 25 years of age or older is a college graduate, what is the probability that he/she is in the force labor? Show your work. Given for college graduates: total pop = 51,582 in labor force = 40,390 employed = 39, 293 I tried using the ...
*December 17, 2008 by K*

**College Statistics**

A random variable X has a Gamma distribution with (alpha = a, beta = b). Show that P(X > 2ab) < (2/e)^a. hint: X > c is equivalent to e^Xt > e^ct
*March 30, 2013 by Allie*

**Statistics**

At one college, GPA’s are normally distributed with a mean of 2.9 and a standard deviation of 0.6. Find the 70th percentile.
*December 2, 2014 by justice*

**Research and Statistics**

5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics? Using a web-calculator, obtain the ...
*September 11, 2010 by Moreen*

**Political science college**

what is a source for statistics for muslim american businesses in the US Do you know of a source for statistics for muslim american businesses in the US economy
*December 10, 2010 by Carolyn*

**statistics**

A resher ranoumly selects and intreviews 10 male and 100 female college teacher. type of sampling technique?
*March 28, 2011 by Mary*

**College Statistics**

For X ∼ Bin(n, p), show that E(X) = np and Var(X) = np(1 − p) Our book defines this as true, but I don't know how to actually prove it.
*September 30, 2013 by Janet*

**statistics**

A random sample of 8 male college students was taken and asked to report their shoe size and height in inches
*September 14, 2014 by Shabaka*

**statistics**

Reading placement scores for a particular college are normally distributed with a mean of 72 and a standard deviation of 7. a) draw a sketch of the reading placement scores for students at this college. be sure to mark the mean and also to mark one and two standard deviations ...
*June 3, 2012 by whitney*

**statistics**

Sixty-four students in an introductory college economics class were askd how many credits they had earned in college, and how certain they were about their choice of major. At a = .01, is the degree of certainty independent of credits earned? Credits Very Somewhat Very Row ...
*June 23, 2008 by Gayla*

**MATH**

Can someone please HELP me figure this out? According to statistics gathered as part of a research project by a group of statistics students on the college campus, 376 out of the 439 deaths attributed to lightning strikes were male. If all of the names of the deceased were ...
*September 24, 2011 by Shelly*

**College Help**

I'm going to college this September, and would like to know of any good web sites for beginning college students.
*July 28, 2008 by Sally*

**misc.**

if something says your pursuing a college degree does that mean your in college are are planning in the future to go to college?
*May 27, 2011 by Sara*

**statistics**

The National Center for Education surveyed 4400 college graduates about the lengths of time required to earn their bachelor's degrees. The sample mean is 5.15 years, and assume that standard deviation is known to be 1.68 years. Based on the sample data, construct the 99% ...
*July 30, 2012 by kathy*

**Statistics**

Use the multiple regression equation to predict a persons salary. Assume that the variable A is the number of years of college. Assume that the variable B is the number of years of experience. Suppose the person has 7 years of college and 3 years of experience. What should ...
*May 20, 2011 by Jacob*

**Statistics**

Use the multiple regression equation to predict a persons salary. Assume that the variable A is the number of years of college. Assume that the variable B is the number of years of experience. Suppose the person has 7 years of college and 3 years of experience. What should ...
*May 20, 2011 by Scott*

**statistics**

Question Details The following data was collected to determine whether or not Monroe County College students work 18 hours per week: 20,22,25,12,30,49,10,30,17,15,0,24,20,22,23,20,25,24,30,12,15,29,0,25,2,40,30,0,33,0,45,30,38,48,0,40,20,0,0,24. a) Describe the population b) ...
*March 8, 2012 by Lajuanda*

**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**

A study is being planned to estimate the mean number of semester hours taken by students at a college. The population standard deviation is assumed to be o=4.7 hours. How many students should be included in the sample to be 99% confident that the sample mean is within one ...
*March 25, 2012 by Jasmine*

**statistics**

A city survey found that 47% of teenagers have a part time job. The same survey found that 78% plan to attend college. If a teenager is chosen at random, what is the probability that the teenager has a part time job and plans to attend college?
*October 11, 2011 by Olivia*

**Statistics**

The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 4.0 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will take between 2.5 and...
*February 13, 2011 by Andy*

**statistics in psych**

mouradian (2001) surveyed college students selected from a screening session to include tow groups a) perps b) comparisons...
*November 6, 2010 by diana*

**statistics**

How large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week within 3% with 95% confidence?
*July 30, 2011 by Anonymous*

**Math**

According to a student project for statistics 250, the amount of money spent on texts per semester by the population of students at a small liberal arts college is normally distributed with a mean of $426 and a standard deviation of $54. Determine the percent of all samples of...
*October 29, 2008 by Mary*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 27, 2013 by Katy*

**Math please help!**

According to a student project for statistics 250, the amount of money spent on texts per semester by the population of students at a small liberal arts college is normally distributed with a mean of $426 and a standard deviation of $54. Determine the percent of all samples of...
*October 30, 2008 by Mary*

**persuasive essay!!**

Is it better to go to college and be successful or open your own business without a college degree? Need help writing thesis. What are some benefits of going to college rather than not going to college and opening your own business
*March 24, 2008 by Taniya*

**statistics**

Statistics play s a major role in the health care field in today's environment. Please provide how statistics can be important and influential in the nursing profession. Provide at least two examples where you ahve observed statistics to contribute positively to the needs of ...
*May 18, 2010 by cortez*

**statistics**

5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics? Using a web-calculator, obtain the ...
*November 29, 2011 by shirley*

**statistic**

1.The state highway patrol stops every 5th car on highway 210 to check drivers' licenses and registrations. Which sampling technique are they using? systematic sampling -chose this one convenience sampling cluster sampling simple random sampling stratified sampling 2.You ...
*July 13, 2012 by bria*

**Statistics**

I'm going over some practice problems and I can't seem to figure this one out. Can anybody give me some help please? On a measure of artistic ability, the mean for college students in New Zealand is 150 and the standard deviation is 25. Give the Z scores for New Zealand ...
*April 9, 2012 by Michael*

**college statistics**

When performing a hypothesis test upon dependent samples, the variable interest is... I think it is the differences that exist between the matched-pairs data.
*July 28, 2009 by mike*

**College Statistics, Intro**

A worker for the American Red Cross wants to predict the average number of blood donations of college students. He takes a random sample of 900 students. But then he is puzzled and asks you: " In my sample most of the students have zero donations and the percentages go down as...
*December 14, 2010 by Chelsea *