
Statistics
I neep help on two questions! A condition that occurs in multiple regression analysis if the independent variables are themselves correlated is known as: 1. autocorrelation 2. stepwise regression 3. multicorrelation 4. multicollinearity (I think this is
asked by Debra on September 15, 2008 
math
Can someone correct this for me please or help me out.... Why are variables useful in algebra? My answer: Variables are useful in algebra because they detemine an answer that anyone is trying to get to. Variables can represent a single number or a whole
asked by jasmine20 on January 1, 2007 
Math
Hi there I need help with the restrictions on the variables of this question: Simplify. State any restrictions on the variables. log(x^2+7x+12)/log(x^29) So my answer is: log(x+4/x3) which is correct. Now for the restrictions, I have: x3 However the back
asked by Halle on June 13, 2009 
science
Writing variables and hypothesses What about them? i don't even understand them and i have to make up 4 variables and hypothesses about independent and dependent variables i don't even understand them and i have to make up 4 variables and hypothesses about
asked by Farah on September 18, 2006 
PreAlgebra
this is the question please help me explain what to do its confusing. The rate that a hot tub drains is 5.9L/min.How many minutes does it take to drain a 160L hot tub? ~27 mins. Rate*time= volume solve for time. ((27.12 to be exact)) Hi Science. (And don't
asked by Kemmaris on May 15, 2007 
Regression
1)Price of COke 2)Price of Pizza 3)Price of Beef 4)Quantity of Beef 5)Income 1) List and explain each of the components of you regression model, both the dependent and independent variables 2) list each of the indepedent variables, and hypothesize the sign
asked by Peter on September 30, 2009 
Algebra
2x+6 what is the rate of change between the two variables, what is the y intercept, can you Also answer these same questions for the equation y = 3x + 10
asked by Anonymous on September 10, 2016 
MATH,ALGEBRA
My questions are: why are variables useful in algebra? Also, what makes the use of variables difficult to understand? Variables are things that change or vary. Depending on which variables concern you, you might want to be able to predict just how they
asked by jasmine20 on December 27, 2006 
math
What are the important variables in the problem below? A test is worth 50 points. Multiplechoice questions are worth 1 point, and shortanswer questions are worth 3 points. If the test has 20 questions, how many multiplechoice questions are there?
asked by aaron on September 28, 2015 
Math
The trigonometry practice exam has 6 questions with the answer A 8 questions with the answer Baby 10 questions with the answer C and 9 questions with the answer D The number of different answer keys that can be created with the letters above is A. 2.27 ×
asked by Louis on March 2, 2018 
Algebra
I was given this problem to solve and no matter what order I multiply the variables I don't get the right answer. 27xy, when x=12.7 and y=100.4 the answer is 34,427.16 I cannot figure out the way to achieve this answer. I find problems with variable fairly
asked by Aria on April 16, 2011 
English
1. This time only the members of Group One can answer the questions. 2. This time only the memvers in Group One can answer the questions. (Which preposition should I use? Can we use both prepositions? Which one is commonly used?) 3. Group One members only
asked by rfvv on April 16, 2013 
math
In the space below, indicate the values stored in the variables A,B,C, and D for the program. Enter your answers by typing in the value of A for Answer 1, value for B in Answer 2 and so on. Do this for all four variables.(8 points) 10 DATA 2,3,4,5 20 READ
asked by Anonymous on February 15, 2012 
Math(Factorial)
A women student is to answer 10 out of 13 questions on a test. Find the number of choices where she must answer: (a) the first two questions; (b) the first or second questions but not both; (c) exactly 3 out of the first 5 questions (d) at least 3 of the
asked by Anonymous on April 9, 2014 
Science
I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and
asked by anon on August 20, 2015 
Biochemistry, Biology, Chemistry
An enzyme works on two substrates, S1 and S2. Its Km for S1 is 100mM and its Km for S2 is 10mM. Based on this information, answer the following questions: 1. For a given [E] will it have a higher Vmax for S1 or S2? Explain your answer 2. Is S1 or S2 a
asked by Biochemistry on January 26, 2013 
Regression Analysis
1)Quantity of Beef 2)Price of Beef 3)Price of Pizza 4)Price of Coke 5)Income 1 list and explain each of the components of your regression model, both the dependent variable and the independent variables 2list each of the independent variables,
asked by Peter on September 30, 2009 
Sociology
What are necessary to explain research findings? a variables btheories c symbols d research models I'm not sure of the answer because you would need models to conduct the research and theories to model the research. I don't think symbols would explain
asked by Steve on August 8, 2015 
Sixth Grade Math
1. Write a phrase in words for each algebraic expression. A. "t  29" Answer:29 minus t B. "a take away 16" Answer:16a Write an algebraic expression with two variables and one constant. Answer: 150 + xy Did I answer the questions correctly?
asked by Stephon on December 18, 2014 
systems word problems
the sum of two numbers is 11. their product is 30. find the numbers. answer 5,6 represent the unknown by variables using let statements, translate into equationsusing variables. combine hem using substitution or elimination. answer the question by
asked by ed on March 2, 2010 
8th Grade Algebra: Answer Check
Find the length of the 3rd side of each right triangle. 1. 8^2+15^2=c^2 Answer: c=17 2. 5^2+b^2=13^2 Answer: b=12 3. 9^2+13^2=c^2 Answer: c~15.81 Simplify. Assume that all variables are nonnegative. { this means square root 4. {12 Answer: 2{3 5. 2{75
asked by Joy on January 21, 2009 
Science
There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered,
asked by anon on August 24, 2015 
Math (Sorta dumb question)
I'm given the equation S = L(1  e^(kt)) I am asked to write S as a function of t when L = 100, S = 25 when t = 2 So would my final answer just have S and t as variables? Or have S, t and L as variables? Ended up with S = 100(1  e^((ln(3/4)/2)*t) Or is
asked by Ray on June 2, 2017 
Math
In each case, determine whether the situation calls for a discrete or continuous random variables and explain your answer.
asked by Alex on March 30, 2010 
medical codding and billing
Can someone plesae help me. I need to to answer these four quetions. I got something, but I'm not sure if Igot it right. The questions are, How can eliminating abbreviations reduce errors?. Should written policies be developed for abbreviation usage? If
asked by kp on August 2, 2009 
medical coding & billing
Can someone plesae help me. I need to to answer these four quetions. I got something, but I'm not sure if Igot it right. The questions are, How can eliminating abbreviations reduce errors?. Should written policies be developed for abbreviation usage? If
asked by Sharon on September 24, 2009 
physics
a 1000 kg truck traveling at a speed of 40m/s skids to a halt on wet concrete where µk = 0.60. how long are the skid marks? (Please explain all variables and equations I'm clueless in this subject) I keep trying to use the equation I found online: d=
asked by joe on October 20, 2016 
Easy Econ, help!
Recall the production frontier (ppf) model from intro Econ ( refer to the basic butter and guns graph that could be found on Wikipedia). What are the exogenous variables in this model and what are the endogenous variables? Briefly explain.
asked by Linda on October 7, 2016 
MATH/ALGEBRA PLEASE
Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening “graphically”, where the services are charging same rate? : Your company must use a transportation service to shuttle their
asked by H on December 18, 2009 
Math
I need help solving this math problem, please: Problem: Angela's math test had 100 multiplechoice questions. Each correct answer was worth 1 point, each incorrect answer was worth 2 points, and skipped questions were worth 0 points. Angela answered an
asked by Patti on October 6, 2008 
math help
I need help solving this math problem, please: Problem: Angela's math test had 100 multiplechoice questions. Each correct answer was worth 1 point, each incorrect answer was worth 2 points, and skipped questions were worth 0 points. Angela answered an
asked by Patti on October 7, 2008 
Algebra word problem
There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest
asked by Linda on October 5, 2011 
Science
I have vocabulary words for science that I have to define and I cant find the defintions for Manipulated variables, responding variables, controlling variables. Can someone help me?
asked by Kiephier on September 9, 2008 
MathStats
An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula. The researchers use videotape to count how many cockroaches are still alive, and how many appear to be in distress, at 10 second
asked by Jen on October 10, 2011 
overview of teaching techniques
how should students be grouped to best encourage learning? (a)according to same abilities (b)according to same attitudes (c)according to same interests (d)according to a common task (my answer) which of the following types of questions are unfortunately
asked by susue on August 25, 2011 
Math
The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in
asked by Anonymous on January 31, 2017 
Math
The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in
asked by Anonymous on January 31, 2017 
Math
The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in
asked by Ivo on January 31, 2017 
Math (Stats)
In order to predict yvalues using the equation of a regression line, what must be true about the correlation coefficient of the variables? A. The correlation between variables must be an xvalue of a point on the graph. B. The correlation between
asked by Ray on March 11, 2017 
matt/116
Will someone please help me find the answer to this question please. How do you write a system of linear equations in two variables? Explain this in words and by using mathematical notation in an equation.
asked by Sade C on February 12, 2013 
overview of teaching techniques
which of the following statements is a good technique to use when tutoring a student? (a)''the next problem is easy.you should be able to get it.'' (b)''this next problem is hard,but lets see if you can get it.''(my answer) (c)''johney and erica can do
asked by susue on August 25, 2011 
statistics
A multiple choice test has 3 questions and each question has 3 choices. If Nacho takes this test, what is the probability that he will: (a)answer all questions correctly? (b)answer all questions wrong? (c)answer two questions correctly?
asked by Venice on February 8, 2014 
MATH
I am confused about the following problem. Could someone help me out? In a statistic class, the average score of midterm is 75 and the SD is 8. The average score of final is 65 and the SD is 12. The scatter diagram of the two variables (midterm/final
asked by YAMI on March 28, 2015 
math
A test consists of 120 questions. Each correct answer, each wrong answer and unanswered question in the test carry 1 Mark, 0.5 Mark and 0.25 Mark respectively. Find the maximum number of questions that the candidate could have answered wrongly in the test,
asked by sandra on November 18, 2014 
algebra
There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest
asked by Anonymous on October 4, 2011 
literature
WHAT IS A WONDER QUESTION? my english teacher assigned me a summer assignment and one of the question says: 2. Writing raises questions. Write a wonder question the book raises for you. Wonder questions ask about the significance of something you observe;
asked by josh on August 29, 2008 
PHI 208
Explain why you think these questions would be the type to reveal the computer to be a computer? Why would these responses have to be given by a human being? (If you don't think there are such questions, explain how the three questions you chose would fail
asked by lisa on June 27, 2013 
geometry
The diameter of circle C is 18 cm. is 60°. Use this information, the diagram, and your experiences in geometry this semester to answer these questions. (Use .) a) Find . Explain. b) Find . Explain. c) Find . Explain. d) Find the length L of . Show your
asked by Anonymous on June 1, 2010 
Math
Use symbols to represent unknowns and variables. Write inequalities to answer questions arising from situations. 1. Ten less than a number, x, is greater than 32. 2. A number, n, decreased by 6 is less than or equal to 4. 3. One half of a number, increased
asked by Pam on September 25, 2013 
overview of teaching techniques
which of the following statements about asking questions is true? (a)low level questions tend to promote academic achievement in students (b)most teachers in classrooms today ask kigh level questions (c)questions should be worded as clearly and simple as
asked by susue on August 25, 2011 
Applied Social Research Method
I need some help. For a class I need to do the following: Frame a proper research question and complete the following research processes: tell me your variables, define or conceptualize all you terms and variables, tell me what level of measurement you
asked by Crystal on March 1, 2012 
6th grade mathms. sue
MS. Sue here is exactly what the paper says think back to the experiment you just designed to test the Best Wheels Bike Shop's new super titanium wheel bearings. Can you be sure that your results are due to the new bearings and not something else? That
asked by m on January 9, 2012 
Reading
I am reading this book called "The Last Book in the Universe" and I have to answer some questions and one of the questions asked : (chapter 2) What happened in the big times that changed the way people live? What do we call this phenomenon? Can you explain
asked by Sara on August 7, 2012 
math(Quantitative) ...Pls help me
Linear regression analysis is based on identifying independent variables and gathering historical data for these variables.Name 2 independent variables to forecast these dependent variables: (a)Demand for hospital Services. (b)Students entering Legon
asked by Bravo on October 9, 2016 
Math
Earl answered 2 more math questions correctly than Anna did. Anna answered 3 fewer questions thatn Juanita did. Juanita answered 21 questions correctly. How many questions did Earl answer correctly? Could someone explain how to get the answer. Thanks.
asked by Mattie on September 18, 2008 
algebra
he is missing 3 cents to buy an ice cream bar. she is missing 5 cents to buy the same ice cream bar. they combine their money but they are still 1 cent short. how much is the ice cream bar? Let x denote how much he has and y denote how much she has. Let p
asked by alejandra on September 10, 2006 
Psychology
A scientist studied whether climate affected growth in rats. All rats were the same age and from the same parent rats. For the study, they were raised in three distinct climates: tropical, arctic, and multiseasonal. In this study, the climates are
asked by Carmela on February 27, 2014 
8th grade math
I need someone to explain how to solve equations with two variables and tell me what the formula or equation is? Please help and explain. Thank you!
asked by saranghae12 on March 2, 2012 
math
Four key marketing decision variables are price (P), advertising (A), transportation (T), and product quality (Q), Consumer demand (D) is influenced by these variables. The simpiest model for decribing demand in terms of these variables is: D = k  pP + aA
asked by Rachael on September 8, 2013 
math
I am bouncing this questions for an hour now and still have not come up with answer I believe in. Can you solve for a variable in an equation? Explain the answer Can you help?
asked by Shaira on August 2, 2010 
are these correct
Here is the questions it says to simplify: xyy^2 x^3 and here is the answer x^4 y^3  here is another one m^3 pmxm^2 x^3 p^5 and here is the answer m^6 p^6 x^4  and here is another one xm^2 xm^3 x^3 m
asked by Benita on August 2, 2005 
maths
In a test there were 25 multiplechoice questions. They were marked as follows: 2 marks for each correct answer 0 marks for a nonattempt 1 mark for an incorrect answer. Sarah attempted 4 5 of the questions and received 22 marks. How many questions did
asked by Jannie on October 15, 2010 
maths
In a test there were 25 multiplechoice questions. They were marked as follows: 2 marks for each correct answer 0 marks for a nonattempt 1 mark for an incorrect answer. Sarah attempted 4 5 of the questions and received 22 marks. How many questions did she
asked by Jannie on October 12, 2010 
PreCalculus
Could you please explain how to use a matrix (matrices) to solve a system of linear equations (two variables)? My book doesn't explain it in a way I can understand. Please and thank you.
asked by Caroline on January 24, 2013 
math
can someone please answer these questions for me?: 1. if the measure of an interior angle of a regular pentagonis 108 degrees, then the angle sum of that regular pentagon must be: A. 120 degrees B. 360 degrees C. 540 degrees D. 720 degrees 2. is it
asked by Brianna on December 12, 2010 
Information Systems in Organizations
Directions: Test your knowledge of this topic by selecting the best answer for each of the following questions. When you click the Submit button, you will see your score and the results will go to your instructor. You may want to refer to the general
asked by Denise on May 18, 2012 
Physics
HI I'm just looking for an answer for 3 questions as my textbook does not explain the answer. How a tin can loses heat through: 1) Conduction 2) Convection 3) Radiation
asked by Jamie on September 30, 2014 
(ASAP)
how can a relationship between water depth and time to ascend to the water's surface be a function? Explain how the two variables are related. Answer this Question
asked by Lola on September 10, 2013 
ART 101 ART APPRECIATION
Review the “Questions Art Historians Use” section in the Introduction of the textbook. Select two of the five questions. Explain what art historians are trying to gain by asking each question and how they might go about finding an answer.
asked by LORETTA on April 27, 2015 
math
a)The sales representative tells you they also have two floor plans available, but they only have 38 homes available. Write an equation that illustrates the situation. Use x and y to denote floor plan #1 and floor plan #2 respectively. b)The representative
asked by Kammy on November 7, 2009 
math
1.make up 10 different algebraic expressions 5 of them will have a single variable & 5 will have multiple variables 2.identify the  variables  coefficients  constants 3.pick values for your variables and tell my what your expressions is worth
asked by estefano on September 7, 2008 
math
1.make up 10 different algebraic expressions 5 of them will have a single variable & 5 will have multiple variables 2.identify the  variables  coefficients  constants 3.pick values for your variables and tell my what your expressions is worth
asked by estefano on September 7, 2008 
algebra2
Using complete sentences, explain which method you would use to solve the following system of equations and why. In your answer, include the solution to one of the variables and how you found it using the method you chose. 2x + y + z = –7 x – 3y + 4z =
asked by Rayniya on November 22, 2010 
Estimating sums and differnces of fractions
Hello! My 10 year old daughter is having trouble understanding these preparation questions from her math teacher. I know the answer but I don't know how to explain it to her.. I'm sorry if that doesn't make any sense. When I was in 5th grade they taught us
asked by Mrs. Trisha on December 11, 2014 
algebra
I'm not sure how to answer this question? 1
asked by Janet on September 12, 2014 
statistics for health research
1.A study is conducted to determine the factors that affect the increased maternal mortality rates in Kenya. Establish the variables (at least 5 variables) that you would use to conduct the study. State your expected results and explain how you will apply
asked by maureen on June 16, 2014 
creative writing please help
Please help me I signed up for a creative writing class thinking that I would do pretty well because I am not that bad of a writer but the questions that are asked are really hard to answer. The questions that were asked were like "how old is the color T"
asked by Anonymous on August 29, 2007 
math
Part A of your history test has 15 multiple choice questions. Each question has four choices. Part B has 10 true/false questions. How many ways are there to answer the 15 multiple choice questions? How many ways are there to answer the 10 true or
asked by John on February 16, 2011 
statistic
Quiz has 6 questions. Each question has five possible answers, only one of each 5 answers is correct. If student randomly guesses on all six questions, what is the probability to answer 2 questions right? Tip: first, you have to define parameters of
asked by tanya on December 5, 2010 
Algebra help
Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening “graphically”, where the services are charging same rate? : Your company must use a transportation service to shuttle their
asked by H on December 18, 2009 
Chemistry
I had an equilibrium laboratory and had to answer a few questions after the lab. Here are 2 questions I can't seem to know how to answer. 1. Explain in your own words why a saturated solution in contact with some undissolved solid is considered to be an
asked by Robert on July 19, 2012 
Algebra 1
your school is conducting a poll that has two parts,one part that has 13 questions and a second part that has 10 questions. Students can answer the questions ineither part with 'agree' or 'disagree'. What power of two represents the number of ways there
asked by Javar on January 18, 2010 
Statistics
Describe a situation in which you would test a directional hypothesis. Be sure to state the independent variables (e.g., drug or placebo) and the dependent variables (e.g., weight loss) clearly and explain why the hypothesis is directional. Then, revise
asked by Bradman on November 3, 2015 
math/algebra
I have a question of how do I determine the variables when graphing linear equation? For an example graph x+2y=4, how do you come up with the variables as (0,2) (2,1) and (4,0)? The example in my book does not tell me how they came up with this. I know how
asked by ms jay on August 23, 2007 
Physics
Consider a capacitor made of two square plates of side l. The distance between the two plates is d . (a) We insert a dielectric of dielectric constant K>1 and width l a distance x (as in the diagram). What is the total capacitance of this arrangement?
asked by P on March 13, 2013 
Grade 12 Data Management
There are 12 questions on an examination, and each student must answer 8 questions including at least 4 of the first 5 questions. How many different combinations of questions could a student choose to answer?
asked by Rebecca on September 27, 2011 
Analytic Geometry CHECK MY ANSWER
A neighborhood swim club charges a onetime fee of $25 to join and $85 each month. If n is the number of months of membership and t is the total amount spent, then the variables are related by the equation t = 85n 25. Which variable is the independent
asked by Sara on October 3, 2014 
Psyc Research Methods
In the above study, the researchers reported the following mean femininity ratings (i.e. higher numbers indicate greater femininity): male small meals (2.02) male large meals (2.05) female small meals (3.90) female large meals (2.82) Assume that there
asked by Jessie on May 2, 2012 
Statistic
There are two independent multiplechoice quizzes where quiz 1 has eight questions and quiz 2 has 15 questions. Each question in the first quiz has four choices and each question in the second quiz has five choices. Suppose a student answers the questions
asked by Zul on January 2, 2015 
statistic and probability
There are two independent multiplechoice quizzes where quiz 1 has eight questions and quiz 2 has 15 questions. Each question in the first quiz has four choices and each question in the second quiz has five choices. Suppose a student answers the questions
asked by Anonymous on January 10, 2015 
Math
A 100 point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response answer questions are worth 8 pints each. Write a system of linear equations that represents this situation, my answer is to
asked by Steven on May 6, 2016 
Statistics
I'm trying to figure out which type of factorial ANOVA test to use for this data. The data is from a hypothetical study looking at whether males or females are more likely to ask questions during a seminar where people give various presentations. The
asked by Grace on February 15, 2018 
Mat126: Survery of Mathematics
In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading. As you answer the questions above, identify what types of misrepresentation or misuse have been
asked by Leslie on September 20, 2011 
Survey of Mathematics
In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading. As you answer the questions above, identify what types of misrepresentation or misuse have been
asked by Leslie on September 18, 2011 
Organic Chemistry
These questions are somewhat difficult. I believe I am on the right track, but I want to make sure. 1. List these compounds in order of decreasing reactivity towards nitration. Explain your answer. a) acetanilide b) bromobenzene c) toluene d) acetophenone
asked by Anonymous on June 17, 2014 
Math
A quiz contains three True/False questions. If a student attempts to answer the questions by guessing, what is the probability that the student will answer all three questions correctly ?
asked by Lauren on April 26, 2016 
PROBABILITY MATH
An unprepared student makes random guesses for the ten truefalse questions on a quiz. Find the probability that there is at least one correct answer. Could some one please help me? And explain to me how they got the answer? and is there another way
asked by HM on November 9, 2011 
math
On a TV game show, a contestant makes $800 for every correct answer but loses $500 for every wrong answer. After answering 26 questions, Sarah broke even. How many questions did she answer correctly?
asked by Christina on November 16, 2012 
MATH
On a TV game show, a contestant makes $600 for every correct answer but loses $500 for every wrong answer. After answering 22 questions, Sarah broke even. How many questions did she answer correctly?
asked by TAYLOR on May 4, 2014 
MATH
An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula. The researchers use videotape to count how many cockroaches are still alive, and how many appear to be in distress, at 10 second
asked by Jennifer on November 11, 2011