Thursday

October 2, 2014

October 2, 2014

Number of results: 104,841

**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*

**math, pre-statistics**

Two dice are rolled. What is the probability that result is not doubles?(Round to the nearest thousandth)
*February 6, 2009 by Sabrina*

**Statistics**

In Professor White’s statistics course the correlation between the students’ total scores before the final examination and their final examination scores is r = 0.9. The pre-exam totals for all students in the course have mean 275 and standard deviation 50. The final exam ...
*October 21, 2012 by Kevin*

**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!*

**math,pre statistics**

In a recent health study it was claimed that 18% of americans are underwieght.If 4 americans randomly selected what is the probability that a. that all will be underweight b.none will be underweight c. at least one will be underweight
*February 6, 2009 by Angela*

**statistics**

Pre study scores versus post-study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least square regression line was y = 0.2 + 0.9x with a correlation coefficient r = 0...
*September 18, 2012 by Gee*

**math, pre-statistics**

On a 3 day vacation to Seattle the local weather forecaster predicts a 60% chance of rain everyday.What is the probability that it will rain everyday of the vacation.(round to the nearest thousandth)
*February 8, 2009 by Sabrina*

**statistics page on jiskha**

Does anyone find the picture as funny as I do? http://www.jiskha.com/math/statistics/ It's a baby holding a statistics textbook.
*September 9, 2008 by Leo*

**Statistics**

In Professor Smith's statistics course, the correlation between students' total scores before the final exam and their final exam scores is r = 0.67. The pre-exam totals for all students in the course have a mean of 275 and a standard deviation of 26. The final exam scores ...
*February 1, 2009 by Jannel*

**pre- algebra(MATH)**

I need help with pre-algebra solving equations by multiplying or dividing. Can you help me with this homework for free?
*November 5, 2009 by Ketrice*

**statistics**

Given the ensuing well drilling data, answer the following. [Reference: #4.78, page 172] • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well .70 of the time • Pre-...
*October 25, 2007 by sophia*

**statistics**

Pre- study scores versus post- study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least squares regression line was y^=0.2+0.9x withwith a correlation coefficient r...
*September 13, 2012 by Gee*

**statistics**

In 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Census Bureau), of which 68,339 births were to twins and 1,337 births were to triplets or more. What was the probability of having multiples (twins or ...
*June 19, 2013 by f*

**pre-statistics**

Days Stayed Frequency 3 60 4 51 5 14 6 22 7 8 What is the probability a patient stayed at least 5 days? (Round to the nearest thousandth)
*February 6, 2009 by Regina*

**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*

**pre-algebra**

kk my teach told me to describe and draw things that are about pre-algebra and she told me to write what pre-algebra is... so can anyone help me??
*August 25, 2008 by damainmind*

**math, pre- statistics**

Hospital records indicated that maternity patients stayed in the hospital for a number of days shown in the distribution Days Stayed Frequency 1 34 2 23 3 17 4 11 5 8 If a patient's records are selected calculate the probability of each event. A patient stay exactly 3 days.(...
*February 6, 2009 by Sabrina*

**statistics**

I've got to do a project in my math statistics unit. Surveying people on a resturant. How do I do a draft on poster paper?
*May 17, 2011 by Hunter*

**Statistics**

What is an example of a research problem at your organization that would benefit from the use of either descriptive statistics or probability distribution statistics?
*October 11, 2010 by Kathy*

**pre statistics**

In a recent health study it was claimed that 18% of americans are underwieght.If 4 americans randomly selected what is the probability that a. that all will be underweight b.none will be underweight c. at least one will be underweight
*February 5, 2009 by Angela*

**statistics anova**

a professor is interested in whether there is a differnce in counseling student's statistics competency scores among 1) those who have never taken any statistics ourse, 2) those who have only taken an undergraduate statistics course, 3)
*February 27, 2012 by caryn*

**pre calc**

A math teacher uses four algebra books, two geometry books, and three pre-calculus books for reference. In how many ways can the teacher arrange the books on the shelf if books coiver the same subject matter are kept together?
*September 25, 2011 by Katie*

**Need some ideas.... for a Pre-K class**

I am teaching a Pre-K class this summer and the theme for the next two weeks is Community History. What could I all my pre-k class to do that connects to this theme? I thought of helping them to construct houses or certain buildings using boxes and also make a large copy of a ...
*July 5, 2008 by MARY*

**Statistics**

In the following question, identify which choices would be considered inferential statistics and which would be considered inferential statistics. 1. of 500 randomly selected people in new york city, 210 people had O+ blood. a) "42 percent of the people in NYC have O+ blood" ...
*November 16, 2013 by kitty*

**writing **

Which of the following statements is not a general rule for using statistics in a classroom speech? A The more statistics the better. Use statistics sparingly Make sure information is up to date Round off long numbers.
*May 10, 2012 by Anonymous*

**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 ...
*June 3, 2011 by neil*

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)
*September 17, 2011 by Cristina*

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)
*September 17, 2011 by Cristina*

**english **

is pre-analyzed a word? We have pre-analyzed how they would end up if they think they are in love from comparing to Tom and Daisy.
*August 23, 2011 by sam *

**Psychology**

An essential part of scientific thinking is not only how to use statistics correctly, but also how to identify the misuse of statistics. Our textbook authors suggest that students should: Answer distrust all statistics because they convey a false impression of certainty and ...
*April 23, 2013 by J.J*

**Chemisrt**

What is pre-exponential factor for diffusion, because i have a problem with this equation. D=D0*exp[-Ea/R*T] where D=2*10^-13 Ea=2.9*10^-19 joules/atom T=1009 K How to find the pre-exponential ?
*July 27, 2014 by Musaka*

**pre-ap pre calculus **

To solve an equation by finding x-intercepts, Cynthia graphed the function y=x^3-5x+|2x-3| Give several possibilities for the original equation. How do I do it and what's the answer? Thanks
*September 8, 2009 by Anonymous*

**Pre Calculus**

Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
*November 15, 2009 by Pre Calculus*

**Pre-Algebra**

How do you solve this Pre-Algebra problem: $1.25x + $2.25y = $916 x + y = 560
*February 1, 2014 by 8th Grade*

**Pre-Calc**

I'm stuck on a pre-calc problem. I need to find y as a function of x, where the constant c is a positive number for In(y-1)+In(y+1)= -x+c express your question as ln[(y-1)(y+1)] = -x+c change that to exponential form e^(-x+c) = (y-1)(y+1) e^(-x+c) = y^2 - 1 y^2 = e^(-x+c) + 1 ...
*May 9, 2007 by Sarah*

**math, pre-statistics**

A gumball machine is filled randomly with gumballs:red,green,purple,white,pink and yellow. The company claims the following percentages of each can be found in an unopened carton.30%red,20%green,20%purple ,20% white,5%pink and 5%yellow. What is the probability that the first ...
*February 8, 2009 by Sabrina*

**pre alg**

How do u find the GCF with exponets in a 7th gr. pre alg. class?
*January 11, 2009 by tay*

**pre-Algebra**

Sorry, struggling through pre-Algebra .. :-( .. How do i figure out 5x = -20 ?
*February 19, 2010 by Emily*

**Pre-Calculus**

I am in Honors Pre-Calculus and am having a hard time understanding my teacher. I feel so stupid. Does anyone have any suggestions on a website that might give me some insight into what I am doing wrong? Thanks!
*October 7, 2008 by Jill*

**statistics**

We believe that 77% of the population of all Business Statistics I students consider statistics to be an exciting subject. Suppose we randomly and independently selected 40 students from the population. If the true percentage is really 77%, find the probability of observing 39...
*August 8, 2010 by yamini*

**To Ms.Sue And All Teachers**

I am new in this website. Please help me with my math homework. How do you subtract fractions? How do you subtract 7 and 2/5 AND 4 and 5/10? (7 and 2/5 - 4 and 5/10) How do you subtract 6/10 and 6/20? Thank you! Please visit the following site for a super good tutorial: http...
*December 30, 2006 by Kaveri*

**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 for health research**

Descriptive statistics are widely used in qualitative research. When establishing if a population is normally distributed explain when the statistics of sample size, mean, mode, median, skewness and kurtosis will guide the researcher to make conclusions of a normal distribution.
*June 16, 2014 by maureen*

**Pre-Calc**

Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
*October 3, 2011 by Leah*

**Statistics**

1. of 500 randomly selected people in new york city, 210 people had O+ blood. a) "42 percent of the people in NYC have O+ blood" Is the statement descriptive statistics or inferential statistics? b) "58 percent of the people in NYC do not have type O+ blood" Is the statement ...
*November 16, 2013 by kitty*

**statistics**

The following list is a sampling of the costs of various statistics textbooks used at several colleges. Give the upper confidence limit for a 95% confidence interval estimate for the mean cost of all statistics textbooks. 109.95; 92.00; 96.70; 84.85; 92.60; 84.45; 90.95; 77.00...
*July 31, 2014 by martha*

**math/statistics**

Could anyone explaint to me what role the Binomial Theory plays in statistics and probability? Using statistics, we can make statements about a population based on sample data. Probability helps us make those statements. The binomial theory can be used to determine ...
*March 6, 2007 by Jennie*

**Pre-Calculus**

Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
*October 3, 2011 by Leah*

**Statistics**

Of 500 randomly selected people in new york city, 210 people had O+ blood. "58 percent of the people in NYC do not have type O+ blood" Is the statement descriptive statistics or inferential statistics?
*November 17, 2013 by kitty*

**Statistics**

3. A professor is interested in whether there is a difference in counseling students’ statistics competency scores among 1) those who have never taken any statistics course, 2) those who have only taken an undergraduate statistics course, 3) those who have taken COUN 503, and ...
*December 9, 2012 by Ke Ke*

**education**

I'm doing a power point on pre-k classroom. I need help finding a classroom arragment picture. Like how the room needs to be set up before a pre-k room open. I hope this makes sense.
*December 12, 2009 by Sueann*

**Pre-Vet**

I am doing a research paper for my pre vet class but I cant think of a subject to do it on. I would like to use a subject in wildlife veterinary and it needs to be about a medical topic or carreer. Any suggestions?
*November 12, 2011 by Calla*

**consumer math**

The Mannings file a tax return showing $125000 in earned income, $3288 from interest income, and they have a tax credit of 1% of their earned income. They claim 5 exemptions of $2500 each, one head of household exemption of $10500, pre-tax medical deductions of $125 weekly, ...
*August 9, 2012 by Megan*

**Math**

Is IB Math Studies the same as Pre-Calculus? I heard that IB Math Studies is for students who have a low background in math. Is that right?
*August 20, 2013 by Anonymous*

**Pre-K lesson plan**

I am a pre-k summer school teacher, and the theme for this week is "my neighbors." Can you suggest any lesson plans or art and craft activities that connects to the "my neighbor" theme.... or do you know a particular website that could help me.... thanks alot
*August 5, 2008 by Mary*

**math**

I am doing pre algabra math and I am in 7th grade I need help to simplify the expression
*January 12, 2011 by ashlyn *

**Pre-Vet**

I'm doing a report on shark and ray behavior for my pre-vet class and I have been trying to get some good information on tonic immobility. There is not much about it on the internet so any information would be helpful.
*October 23, 2011 by Harley*

**what does pre-algebra mean??**

i have to draw things that have to do with pre algebra but...i dont understand the meaning of it
*August 25, 2008 by damainmind*

**statistics**

Given the ensuing well drilling data, answer the following. • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well .70 of the time • Pre-drilling ballistics test’s negative ...
*October 25, 2007 by sophia*

**statistics**

12. A statistics student received a grade of 85 on a statistics midterm. If the corresponding z score equaled +1.50, and the standard deviation equaled 7, what was the average grade on this exam? a. 95.5 b. 74.5 c. 78.0 d. Cannot determine without knowing how many took the ...
*February 26, 2012 by tim*

**math**

The probability that Luis will pass his statistics test is 0.37. Find the probability that he will fail his statistics test.
*July 12, 2011 by candy*

**Pre-Algebra Math**

6(x+4)=3x-2
*September 22, 2010 by Morgan*

**math-pre algebra**

what is 4a-7=4(a-2)+1?
*March 3, 2011 by Helen*

**math Pre-Algebra**

5.2
*September 2, 2012 by Jennifer*

**math pre algebra**

what is the slope of y=5x-6 and y=7/2x +5 ?
*April 29, 2009 by Tanisha*

**Math Pre Algerbra**

4+3[8-3*2+4(5-1)] I got 68
*August 28, 2011 by Ann*

**math pre calc**

solve for x. 8^6+3x=16
*March 25, 2012 by danielle*

**Pre algebra math **

How do I do 21 - y, explain
*August 19, 2012 by Chris*

**Math**

What is the "pre-image" of a function?
*October 24, 2012 by Cicilia*

**Math (pre calculus)**

ax+b/cx+d=2 solve for x
*February 20, 2014 by Danielle*

**Statistics**

In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive. (a) Construct a 95 percent confidence interval for the population proportion of positive drug tests. (b...
*March 23, 2010 by Anonymous*

**math**

someebodyyyyyyyyyyyyyyy help stuck in pre algebra hw!!!!!!!!!!!!!!!!
*April 28, 2011 by Anonymous*

**8th grade math in pre-algebra**

6(2x+3)=42
*November 4, 2011 by Anonymous*

**Math Pre-Algebra**

5.2 (division sign) 1.25
*September 2, 2012 by Jennifer*

**math**

how to do pre algebra pizzazz page e 28
*April 15, 2013 by drew*

**math pre calc**

gaussian elimination x+Y+Z=-2 X-y+5z+22 5x+y+z=-22
*April 25, 2013 by JT*

**math pre calc**

solve for X marticies 2 0 5 4 -1 3 =2 6 x -7
*April 25, 2013 by JT*

**Pre-Calculus/Calculus**

I am too embarassed to ask this Calculus (really pre-calculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x-1 actually f(x)=1/3x+1? How do I find it? What if it asks the same equation replaced with f to the -1 power (x)? I think I know how the ...
*July 1, 2008 by Molly*

**statistics and probability**

In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,043 were positive. (a) Construct a 95 percent confidence interval for the population proportion of positive drug tests. (b...
*November 1, 2010 by Laura*

**Statistics**

Variables in the dataset dietstudy Variable name Variable description id Patient ID Basetg Pre measurement lev Final tg Post Measur. Level Base wt pre measure level Final wt Post measure level A researches has collected data to investigate a research problem regarding the ...
*November 10, 2010 by veeone*

**Statistics- Math **

Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. n=550 x= 220, 90% confidence The margin of error E = (round to four decimal places)
*February 9, 2012 by Jessica Adamas*

**Pre-K class needs your help**

I noticed that someone posted this question before but I wanted to see if there were anymore ideas...... I am a pre-K teacher, as well, and my class will be doing a unit on Community History.... what activities and worksheets could I give my students (pre-k) that connects to ...
*July 10, 2008 by LISA*

**pre algebra**

my grade is 83.17 in pre algebra in college, but the final exam is worth 300 points. If I got a B or B- or a C on the final, what would my grade be overall?
*March 10, 2011 by Amber shall*

**Statistics**

Use a x squared-test to test the claim about the population variance or standard deviation at the given level of significance and using the given sample statistics. Claim: ơ2 ≤ 60; α = 0.025. Sample statistics: s2 = 72.7, n = 15
*December 26, 2007 by Brandon*

**math-pre al**

what are lateral faces on a square pyramids?
*November 15, 2009 by spicer*

**math -pre algebra **

how many years will it earn $72 in interest
*May 26, 2011 by britney *

**pre-algrbra**

need help with math problem 15-2(5-2) Answer=10
*August 28, 2011 by Ann*

**math pre-algebra**

1.x/4+2=1 2.-3+x/1=-3 please show steps thanks
*September 22, 2011 by paul*

**Math: Functions and Definitions**

What is the "pre-image" of a function?
*October 24, 2012 by Cicilia*

**Math**

Please someone help with my pre calc question!
*February 11, 2013 by Anthony *

**Math (pre calculus)**

please simplify (1/1+x+h) - (1 /1+x ) divided by h
*February 6, 2014 by Danielle*

**Statistics**

Use a chi-squared test to test the claim about the population variance or standard deviation at the given level of significance and using the given sample statistics. Claim: ơ2 ≤ 60; α = 0.025. Sample statistics: s2 = 72.7, n = 15
*December 27, 2007 by Brandon*

**Intro to Healthcare Statistics**

Discuss how statistics are generated and how statistical information is used by healthcare organizations. Explore the NC State Center for Health Statistics at the following website and discuss at least two types of statistic health information that NC collects.
*August 25, 2013 by tammy*

**pre cal **

does anyone take pre-cal online ?
*April 16, 2012 by Mecie *

**statistics health care**

Why are measures of central tendency essential to descriptive statistics?
*November 9, 2008 by marsh*

**Statistics**

Can someone please give specific examples of how psychologists use statistics
*June 26, 2011 by Carla*

**statistics**

The mean annual income of employees who took a statistics course is greater than $60,000.
*December 12, 2012 by john*

**Math HELPPP**

In a survey of 2000 adults 50 years and older of whom 40% were retired and 60% were pre-retired, the following question was asked: Do you expect your income needs to vary from year to year in retirement? Of those who were retired, 33% answered no, and 67% answered yes. Of ...
*October 16, 2012 by Bill*

**statistics in health care**

Why are measures of variability essential to inferential statistics?
*July 26, 2008 by jean*

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