Saturday

July 30, 2016
Number of results: 9,721

**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*

**Math**

2500 students take a college entrance exam. The scores on the exam have an approximate normal distribution with mean u = 52 points and a standard deviation o = 11 points. Estimate the percentage of students scoring 52 points or more. ^ How would you do this?
*May 7, 2013 by Ruth*

**algebra 1**

I was just wondering if anybody could explain to me the steps in 'solving systems in substitution' and 'solving systems in substitution with a variable'. I'm majorly confuzled!!!! It might help to post a specific problem so someone can show you the steps.
*March 7, 2007 by Otoño*

**Can somehelp me with this ASAP plz?!?!?! Stats**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 I. What score was earned by more students than any other ...
*October 19, 2011 by Jen*

**statistics**

For a particular sample of 53 scores on a psychology exam, the following results were obtained. First quartile = 44 Third quartile = 68 Standard deviation = 8 Range = 55 Mean = 54 Median = 54 Mode = 71 Midrange = 64 I. What score was earned by more students than any other ...
*January 27, 2013 by Mandy *

**Math - Ratios**

In Mrs. Sotomayor's class, the final grade is based on 6 quizzes and 2 exams. If each exam counts for 3 times as much as each of the quizzes, what fraction of the final grade is determined by each exam?
*September 10, 2013 by Venus*

**Management of information systems**

Information systems cannot solve every business challenge. Identify 2-3 business issues and provide an explanation of why technology cannot be used to aid or solve them.
*February 11, 2011 by Sam*

**statistics**

time required to complete a statistics exam is uniformly distributed between 60 and 150 minutes. What is the probability that a student will take longer than 120 minutes to complete the exam
*November 8, 2011 by deena*

**Math**

My overall average right now is a 77%. A test exam of 67 has to be added in. That exam itself is only 10% added to final. Can someone help and tell me what my final will average out after 10% of the 67 will be? Thank you
*June 25, 2015 by Nursing student*

**College Algebra**

Matt scored 75 on the calculus midterm. If the final exam counts twice as much as the midterm exam, then for wht range of scores on the final would Matt get an average between 81 and 92?
*September 25, 2011 by Ty*

**Science **

what is the importance of ph to biological systems in the human body? I have an answer but is there anything else I could include and is my answer justified? My answer: Changes in the ph could be harmful, Natural buffers prevent rapid or large changes in the pH of living ...
*February 10, 2016 by Mitch*

**Drug Information Sources**

Can someone review over these questions and MY answers at the bottom and let me know if I have missed any or not. I am not asking for anyone to do my homework or anything. I have already do the work I just want MY work check to make sure I got the answers right or not. Please ...
*December 22, 2010 by Kesler*

**Stats**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 Answer each of the following: I. What score was earned by ...
*October 17, 2011 by Jen*

**Algebra 2**

At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74 degree Fahrenheit room since its death, what is the time of death ...
*July 10, 2013 by Anonymous*

**Math.....**

At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74 degree Fahrenheit room since its death, what is the time of death ...
*July 16, 2013 by Anonymous*

**7th grade health please**

1. The process of talking directly to the other person to resolve a conflict (1 point) conflict negotiation assault compromise 2. Forced sexual intercourse (1 point) gang assault rape neglect 3. A disagreement between people with opposing viewpoints, interests, or needs (1 ...
*January 11, 2013 by Delilah*

**Algebra**

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student recieve in order to have a final average of 76 percent? Thanks!!
*September 14, 2013 by Serena*

**Drug Infromation Sources**

Can someone review over these questions and MY answers at the bottom and let me know if I have missed any or not. I am not asking for anyone to do my homework or anything. I have already do the work I just want MY work check to make sure I got the answers right or not. Please ...
*December 22, 2010 by S. Huggins*

**city college**

(Drug Benefits and Post Retirement Liabilities) Delphi Company reduced its other post retirement benefits by approx 500 million because of a change in the law. The federal government will not reimburse companies for prescription drug benefits that it provides to its employees ...
*May 9, 2011 by Anonymous*

**ALGEBRA 1**

In a certain math course, a student needs between 720 and 810 points in order to get a B. The final exam is worth 200 points. If Cathy has 582 points just before the finals, what range of scores on the final exam will give her a B for the course?
*January 6, 2013 by HELP HELP HELP MNHS*

**STATISTICS**

PINWORM INFESTATION COMMONLY FOUND IN KIDS CAN BE TREATED WITH THE DRUG PYRANTEL PAMOATE. RESEARCH SHOWS THE TREATMENT IS EFFECTIVE IN ABOUT 90% OF CASES. DRUG IS ADMINISTERED TO 25 KIDS WHAT IS THE PROBABILITY THAT EXACTLY 23 OF THEM ARE CURED? WHAT IS THE PROB. THAT MORE ...
*February 10, 2008 by todd*

**statistics**

PINWORM INFESTATION COMMONLY FOUND IN KIDS CAN BE TREATED WITH THE DRUG PYRANTEL PAMOATE. RESEARCH SHOWS THE TREATMENT IS EFFECTIVE IN ABOUT 90% OF CASES. DRUG IS ADMINISTERED TO 25 KIDS WHAT IS THE PROBABILITY THAT EXACTLY 23 OF THEM ARE CURED? WHAT IS THE PROB. THAT MORE ...
*February 10, 2008 by todd*

**statistics**

Pinworm infestation commonly found in kids can be treated with the drug pyrantel pamoate. Research shows the treatment is effective about 90% of cases. The drug is administered to 25 kids. What is the probability that exactly 23 of them are cured? What is the prob. that more ...
*February 10, 2008 by todd*

**english**

What if anything, is wrong with the following sentence? The new drug proved to be highly effective, it has no side effect. a. Comma splice b. Properly constructed sentence. c. Lacks parallel parts d. Has unclear pronoun This is an example of a comma splice. You have two ...
*August 5, 2007 by ds*

**Statistics**

The returns on the NASDAQ Index and the following stocks on the NASDAQ Exchange were calculated for the period January 2001 to December 2006 are shown in Xm04-73. Amgen Ballard Power Systems Cisco Systems Intel Microsoft Calculate the beta coefficient for each stock and ...
*May 9, 2012 by Jayson*

**Health care please check answer**

Please check my answer thank you :) A patient visits the doctor's office with abdominal pain of two days' duration. Medical history is significant for tonsillectomy and hypertension. The patient denies alcohol and drug abuse. The rectal exam confirms heme-negative stool. ...
*March 19, 2008 by Kaleigh-Anne*

**NYS ELA Online Practice Exam - PLEASE read!**

Today is my NYS ELA Exam Book 1: Multiple Choice Questions. I know I'm supposed to be at school but the 7th graders take the exam around 12:30 or 12:40. Right now the 8th graders are (still) taking the exam so I'm still at home. Tomorrow is Book 2: Listening and Note-taking (...
*April 17, 2012 by Laruen *

**math Steve for your solution**

0.224g sample that contained only bacl2 and kbr required 19.7ml of 0.1M ango3 to reach the end point. Calculate the percentage of each compound present in the sample. The right answer bacl2 32.4% KBR 67.7% You need to use 3 solution of drug H containing respectively 50%, 20% ...
*December 28, 2013 by Fai*

**history **

Both the Puritans and William Penn viewed their colonies as “holy experiments.” How Did they differ?
*March 5, 2012 by ljessie*

**Math**

The time needed to complete a final examination in a particular college course is normally distributed with a mean of 83 minutes and a standard deviation of 13 minutes. Answer the following questions. What is the probability of completing the exam in one hour or less (to 4 ...
*October 22, 2015 by Kelsey*

**statistics**

Professor Smith gave a final exam in her history class. The scores on the final exam are normally distributed with a mean of 75 and a standard deviation of 6. If Professor Smith wishes to give A’s to the top 4%, what would be the cutoff score be for A’s? a. 90.0 b. 87.3 c. 85....
*April 14, 2014 by Sally*

**Stats**

Suppose the scores of students on an exam are Normally distributed with a mean of 297 and a standard deviation of 66. Then approximately 99.7% of the exam scores lie between the numbers _____and _______such that the mean is halfway between these two integers.
*October 27, 2014 by Please and Thank you!!!*

**statistics**

A sample of 100 patients who use the drug are followed over time. Those that use the drug have a mean life expectancy of 71.30 years. The mean life expectancy for the general population is 75.62 years. The population standard deviation is 28.
*September 20, 2014 by Michelle*

**Health**

1. The functions of the respiratory system are (choose 2) A. to pump blood to the body** B. to deliver oxygen to the body** C. to remove carbon dioxide from the body D. to absorb nutrients 2. ______ is a substance in tobacco products that causes stained teeth and skin A. ...
*February 19, 2016 by Hanna*

**Health**

Body fat is defined as the proportion of fat that is in your body compared to your bone and muscle. True or False My answer is true because to me its the component that refers to the ratio of fat to lean body mass.
*August 18, 2014 by Faye*

**Math ---HELP!!!!!**

sample of nine students is selected from among the students taking a particular exam. The nine students were asked how much time they had spent studying for the exam and the responses (in hours) were as follows: 18, 7, 10, 13, 12, 16, 5, 20, 21 Estimate the mean study time of...
*May 30, 2016 by angela*

**Physics**

A body of mass 10kg moving with velocity 30m/s collide with another body of mass 15kg.If the velocity of both the body are same after collision.Then find their common velocity.
*August 9, 2012 by Aarushi*

**biology**

What two classification groups are used in the scientific name?
*March 2, 2008 by TeeWee*

**science**

what is the last skill i have inference predition obsevation and classification?
*October 5, 2009 by amanda*

**Business Management**

Are there any weaknesses in the EFAS/IFAS classification system?
*January 14, 2010 by chosen4cj*

**English **

Would doing a classification paper on skin types be to complicated?
*February 28, 2010 by Trowers *

**Chemistry**

What does the study of the periodic table have to do with classification and prediction?
*March 23, 2010 by Ash*

**math models**

What is the classification for this polynomial? 4g^2h^4j^2+3g^6h^8 A. monomial B. binomial C. trinomial
*October 6, 2010 by jackie*

**math models**

What is the classification for this polynomial? 4g^2h^4j^2+3g^6h^8 A. monomial B. binomial C. trinomial
*October 6, 2010 by jackie*

**Mgn**

My teacher gave me a project on classification of fibres please help me
*July 1, 2011 by A*

**Science 7R HELP! (Q3)**

which of the seven level of classification is most specific? Please help I don't get this!!!!!
*January 18, 2012 by Laruen *

**algebra**

what are the classification of polynomials according to the number of terms they have.
*October 17, 2012 by kat*

**Science**

Metals used in the home and classification. Uses and how they may be cared.
*May 12, 2013 by Juanita*

**Math**

Select the BEST classification for π ??? Is it rational or irrational?
*November 2, 2015 by Hailey*

**MEDIAN AND MEAN**

The following scores were recorded on a 200 point final exam.193, 185, 163, 186, 192, 135, 158, 174, 188, 172, 168, 183, 195, 165, 183 Find the mean final exam score. A)183 B)185 C)176 I CHOSE A Find the median final exam score. A) 176 B) 183 C) 185 i CHOSE B IS THIS CORRECT?
*November 29, 2009 by Anonymous*

**math, algebra**

Two expressions for calculating the drug dose for young children are: (2t^3 + t^2 -t)a / 48t^2 -24t and (3t^2 -2t)a / 3t^2 + 34t - 24 where t is the age of the child in years and a is the adult dose. If the adult dose for a pain killing drug is 250mg, then what is the dose to ...
*January 2, 2012 by dominic*

**stats 200**

. At a college, 72% of courses have final exams and 46% of courses require research papers. Suppose that 32% of courses have a research paper and a final exam. Let F be the event that a course has a final exam. Let R be the event that a course requires a research paper. a. ...
*September 6, 2015 by edi*

**health**

The nine essentialamino acids are A)NOT FOUND IN FOODS B)NOT MADE BY THE BODY C)ALL PRESENT IN INCOMPLETE PROTEIN D)MADE BY THE BODY not made by the body, so they must come from foods.
*January 5, 2007 by gabrielle*

**Chels**

What can you say about the motion of a body if its veloctiy-time graph is a straight line inclined with the time axis? a. the body moves with uniform velocity b.the body moves with uniform acceleration c. the body moves with non uniform acceleration d. the body moves with ...
*April 29, 2008 by Physics*

**Psychology**

It is common sense to see that the brain has an impact on the body. If the brain issues the command to look to the left, the body generally responds by doing just that. How much can be said of the reverse? Does the body have an impact on the brain?
*March 16, 2009 by Bryan*

**Health**

1. A fungi is a single celled organism that can cause a disease -True? 4. Your skin keeps pathogens from getting out of your body. -False? 16. Hormones are chemical substances made and released in one part of the body that causes a change in another part of the body. -False? ...
*November 26, 2011 by mysterychicken*

**programming**

Write a program that requests the numeric grades on a midterm and a final exam and then uses a Function procedure to assign a semester grade (A, B, C, D, OR F). The final exam should count twice as much as the midterm exam, the semester average should be rounded up to the ...
*April 16, 2013 by Shirley*

**English**

1. My math exam is tomorrow. 2. Tomorrow is my math exam. 3. Tomorrow I have a math exam. 4. I take a math exam tomorrow. (Are all the same and grammatical?) 5. What did you do over the summer vacation? 6. What did you do during the summer vacation? 7. What did you do on the ...
*August 25, 2009 by John*

**Physical science**

The combined weight of a crate and dolly is 256N. (a)If the person pulls on the rope with a constant force of 30.1N, what is the acceleration of the system (crate plus dolly)? Assume that the systems starts from rest and that there are no frictional forces opposing the motion ...
*February 17, 2008 by Anonymous*

**math**

A researcher was interested in the emotional effects of music on exam performance. Before their exam, a professor took one group of students into a room in which calming music was played. A different group of students were taken to another room in which new wave hard rock was ...
*September 21, 2013 by Rachael*

**dog behaver ,traing insturst ics penn state **

test for social behavior and commutation
*August 2, 2014 by miriam*

**Math**

The function D(h)=7e^-0.4(h) can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams will be present after 9 hours. Round three decimal places. so 7e^(-0.4 x 9) = .191 To get this answer...
*November 3, 2010 by Hannah*

**math**

The function D(h)=7e^-0.4(h) can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams will be present after 9 hours. Round three decimal places. so 7e^(-0.4 x 9) = .191 To get this answer ...
*November 4, 2010 by Hannah*

**Algebra**

16. Going into his final exam, John has a total of 72 points out of 90 possible in his history class. His final exam is worth 10 points. How many points must he get on his final exam to end the class with an 80%? 8? 17. Joan actually likes 30% of her male friends and 20% of ...
*June 19, 2010 by mysterychicken*

**Statistics in Psychology**

Please Help! For the following, which type of t-test is required? (a) Studying the effects of a memory drug on Alzheimer’s patients, testing a group of patients before and after administration of the drug. (b) Studying whether men and women rate the persuasiveness of an ...
*February 26, 2014 by jamie*

**English**

is the following statement using a regular or irregular verb and why Some athletes have taken drug tests to prove they are not on steroids. 5b. Some athletes have took drug tests to prove they are not on steroids.
*January 27, 2010 by Heather*

**MATH**

At McLeod University, thirty percent of the students are in Engineering. Forty percent of Engineering students study Probabilistic Systems, and sixty percent of the students studying Probabilistic Systems are in Engineering. What percentage of students at McLeod are either in ...
*October 6, 2011 by Sarah*

**Statistics**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 Answer each of the following: I. What score was earned by ...
*May 19, 2011 by Denise*

**Statistics**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 Answer each of the following: I. What score was earned by ...
*May 20, 2011 by Denise*

**statistics**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 47 Third quartile = 81 Standard deviation = 11 Range = 68 Mean = 70 Median = 71 Mode = 77 Midrange = 55 Answer each of the following: I. What score was earned by ...
*July 10, 2011 by Celest*

**statistics**

For a particular sample of 80 scores on a psychology exam, the following results were obtained. First quartile = 65 Third quartile = 98 Standard deviation = 8 Range = 56 Mean = 83 Median = 81 Mode = 59 Midrange = 64 Answer each of the following: I. What score was earned by ...
*February 2, 2012 by christy*

**statistics**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 72 Standard deviation = 9 Range = 52 Mean = 72 Median = 68 Mode = 70 Midrange = 57 Answer each of the following: I. What score was earned by ...
*September 29, 2012 by Dawn*

**sociology**

what can individuals do to foster pliralism in society
*May 16, 2009 by Gwen*

**Physics**

A massless spring with spring constant 17.1 N/m hangs vertically. A body of mass 0.210 kg is attached to its free end and then released. Assume that the spring was unstretched before the body was released. How far below the initial position does the body descend?
*April 25, 2013 by Anonymous*

**Physics**

a body (A) is moving with a speed of 250m/s in the positive x-direction, collides with body (B) initially at rest and having the same mass as (A). after collision the speed of body (A) is 100m/s making 30 degree with the horizontal. the speed and direction of body (B) after ...
*August 25, 2012 by Help, Thankyou*

**body systems**

A 67-year-old man is diagnosed with cancer and subsequently undergoes chemotherapy. As an expected side effect of chemotherapy, his bone marrow stops functioning. What is a potential consequence of this loss of function? A. His calcium levels will decrease. B. He’ll suffer ...
*March 25, 2009 by Annie*

**biology**

why do biologists use a classification system to study the diversity of life
*February 24, 2009 by sami*

**PLEASE HELP 8**

Basing the Results on Probability A. Calculation B. Abstraction C. Classification D. Relation C
*February 19, 2012 by kesha*

**help asap**

Basing the Results on Probability A. Calculation B. Abstraction C. Classification D. Relation a
*February 19, 2012 by kesha*

**algebra **

graph the following linear equations and determine the correct classification: L1:y=-x+5 and L2:y=-2x+1
*January 21, 2013 by juan*

**english composition**

please help me to create division and classification prewriting essay.
*July 6, 2013 by maria*

**management of Information Systems**

Create a table that list the strengths and challenges of traditional systems development life cycle, prototyping, rapid application development, and end user system development life cycle."
*January 31, 2008 by Shawn*

**Biology**

This is to do with genetics and drosophila. There are 3 pairs of characteristics - body colour, eye colour and wing length. The parents are all from pure-breeding lines. First Cross P1: male-grey body, normal wings female-black body, vestigial wings F1: all females-grey body, ...
*March 7, 2010 by Anonymous*

**biology**

This is to do with genetics and drosophila. There are 3 pairs of characteristics - body colour, eye colour and wing length. The parents are all from pure-breeding lines. First Cross P1: male-grey body, normal wings female-black body, vestigial wings F1: all females-grey body, ...
*March 10, 2010 by Anonymous*

**statistics**

The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. Using the 68-95-99.7 rule, if students are given 90 minutes to complete the exam, what percentage of students will not finish?
*April 13, 2010 by abby*

**Statistics**

The results of a poll are stated as follows: “Based on a survey of 156 randomly selected students, 90% of the student body of 2870 students agree that no student should have to take final exams in two consecutive exam periods”. If 2578 students actually agree, then what is the...
*April 13, 2016 by Angela*

**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*

**Interview Questions**

You enter an exam room to see an elderly patient, and they refuses to remove their glasses during the exam. How would you handle the situation? You have a patient whose English skills need some improvement, and you do not speak their language. How do you overcome the language ...
*September 7, 2015 by Anonymous*

**grammar 5**

Using regular and irregular verbs 5a. Some athletes have taken drug tests to prove they are not on steroids. 5b. Some athletes have took drug tests to prove they are not on steroids. My answer is: 5a
*April 1, 2008 by Rose*

**Chemistry**

Suppose a scientist is doing an experiment to determine the effent of a cancer drug on mice with lymphoma. a)What are some of the variables the scientist should control in the experiment? b)Describe the control group for this experiment. a) I want to say the cancer drug and ...
*August 8, 2014 by Flame*

**Grammar**

1.Select the correct verb form: A) The remainder of the review of systems was normal. B) The remainder of the review of systems were normal. I answered A
*December 12, 2012 by Marie*

**Math**

The velocity of a body A is given by v(t) = 2t^i + t 3^j. The body starts from rest at time t = 0 and position s(0) = 2^i 10^j. At what time, t, does the body cross the X axis? What is the average velocity of the body for the time interval, t = 0 and the time that it crosses ...
*January 22, 2013 by Devin*

**physics**

A body of mass 1 kg and velovity 10 m/s collides with another body if mass 3 kg and velocity 2 m/s comming from the exactly opposite direction. if on collision the body's much into one find the magnitude and direction of common velocity
*January 7, 2014 by Shraddha*

**Algebra 2**

I need help...especially finding out the time... At 1:00 a.m., a homicide detective found the reading of a corpse's body temperature to be 88 degrees Fahrenheit. One hour later, the body temperature is 83 degrees Fahrenheit. If the body has been in a 74 degree Fahrenheit room ...
*July 11, 2013 by Anonymous*

**Science**

Which is a correct statement about the excretory system? A: Key organs of the system include bladder, intestines, and kidneys B: It is similar to the digestive system and that they both rid the body of waste*** C: It rids the body of food that the body did not absorb D: The ...
*February 8, 2016 by LadyPhantomhive*

**Engineering Science**

A bullet with a mass of 28g and travelling at 300m\s strikes a body with a mass of 14kg and which can move freely. The bullet remains in the body. At What velocity will the body start to move?
*June 28, 2012 by Jan Vosloo*

**math**

a student’s grade in a class is simply the mean of five 100-point exams a. If the student has grades of 77, 73, 97, and 89 on the first four exams, what is the students’ grade before taking the last exam? b. What is the lowest score that the student can earn on the last exam ...
*March 14, 2016 by Debbie*

**Physics**

If a 180 pound body is dropped from an airplane 5 miles (26400 ft.) up: a/ how long would it take for the body to reach the ground? b/ what would be the maximum speed the body would attain in miles per hour? Close approximations are all that are required here. Thanks.
*November 20, 2015 by Bill*

**Economics**

A tract of land is found to contain a plant from which drug companies can extract a newly discovered cancer-fighting medicine. This variety of plant does not grow anywhere else in the world. Initially, the many owners of lots within this trtact, who had not planned to use the ...
*November 11, 2009 by Anonymous*

**help**

The President of the United States gives a speech in the White House Rose Garden. Describe how each of the four types of systems you learned about is involved with your chosen scenario. For each of the four systems involved with your scenario, remember to state whether it is ...
*January 5, 2016 by jenifer*