Friday
February 5, 2016

Posts by ash

Total # Posts: 496

stats ?
There are 5 situations below. Can someone please match the situations up with the threat. These would be in a quasi-experimental design. The threats are history, maturation, mortality, testing, and instrumentation threat. THANK YOU! A. Kindergarten students who were identified...
April 5, 2009

science
do you know some plants in the tundra?
March 19, 2009

random assignment-stats
Would this correctly result in random assignment? A researcher assigns students to one of three conditions based on the month of their birth. If they were born in January, April, July, or October, they are assigned to condition A. February, May, August, and November births are...
March 2, 2009

random assignment-stats
sorry. thanks for letting me know!
March 2, 2009

random assignment-stats
Would this correctly result in random assignment? 1. A researcher assigns students to one of three conditions based on the month of their birth. If they were born in January, April, July, or October, they are assigned to condition A. February, May, August, and November births ...
March 2, 2009

chem
If 60.0 mL of 0.150 M CaCl2 is added to 50.0 mL of 0.100 M AgNO3, what is the mass in grams of AgCl precipitate?
March 2, 2009

stats ?
In order to improve the English speaking and reasing skills of their students, Jack Box Elementary assigns students whose native language is Spanish to a bilingual program for 8 week. To test the effectiveness of this program, then also need a control condition, in which the ...
March 2, 2009

stats ?
The Title I coordinator for the district has been tasked with developing a plan to test two new intensive remediation programs for students with dyscalculia (like dyslexia, only numbers are the problem, rather than words!). The students are 60 8th graders at a magnet school ...
March 2, 2009

stats ?
A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated between-participants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication,"...
March 2, 2009

stats ?
A researcher is designing a study to examine whether "talk therapy" (psychotherapy) can help people suffering from depression, as an add-on to taking medication. Finances and logistics limit her to having one control group, so she has to choose the best (not ...
March 2, 2009

stats
In order to improve the English speaking and reasing skills of their students, Jack Box Elementary assigns students whose native language is Spanish to a bilingual program for 8 week. To test the effectiveness of this program, then also need a control condition, in which the ...
March 1, 2009

stats
The Title I coordinator for the district has been tasked with developing a plan to test two new intensive remediation programs for students with dyscalculia (like dyslexia, only numbers are the problem, rather than words!). The students are 60 8th graders at a magnet school ...
March 1, 2009

stats
A researcher investgating depression devises a study that contains the independent variable "Treatment," manipulated between-participants. Participants may experience "psychodynamic therapy," "cognitive behavioral therapy," "medication,"...
March 1, 2009

stats
A researcher is designing a study to examine whether "talk therapy" (psychotherapy) can help people suffering from depression, as an add-on to taking medication. Finances and logistics limit her to having one control group, so she has to choose the best (not ...
March 1, 2009

chem
A quantity of 16.13 mL of a KOH solution is needed to neutralize 0.4883 g of KHP. What is the concentration (in molarity) of the KOH solution? I don't even know where to begin with the first one. Calculate the amount of heat liberated (in kJ) from 375 g of mercury when it ...
February 26, 2009

stats multiple choice ?
A researcher reports that "Students were randomly assignment to intervention or a control group; the two groups did not differ significantly prior to the start of the intervention. At the end of the study, those receiving the intervention showed statistically significant ...
February 18, 2009

Stats multiple choice ?
If we are told that statistical significance has been achieved, what does that allow us to infer? A. That the differences seen in the samples can be generalized to the population that the sample represents. B. That the measures used are valid and reliable. C. That each of the ...
February 18, 2009

stats multiple choice ?
A researcher reports that "Students were randomly assignment to intervention or a control group; the two groups did not differ significantly prior to the start of the intervention. At the end of the study, those receiving the intervention showed statistically significant ...
February 18, 2009

Stats multiple choice ?
What is wrong with the following statement: “In our study, people with bipolar disorder who underwent therapy in addition to taking medication were significantly less likely (p < 0.05) to require hospitalization as compared to those taking medication alone. We found no...
February 18, 2009

mean ?
Does any one know how to find the mean of a normal gaussian distribution just by looking at the graph??
February 18, 2009

mean & mode ?
If you were a teacher, and these numbers represented your students' scores on a test, would the median or mean give a better picture of the overall class performance? The numbers are 22,38,42,65,75,76,79,82,83,87,88,89,89,91,92,94,96,97,98 The mean is: 78.053 & the median ...
February 18, 2009

chemistry
how many milliliters of 5M NaCl are required to prepare 1500 ml of .002M solution?
February 5, 2009

chemistry
thanks
February 5, 2009

chemistry
how many grams of solid NaOH are required to prepare 200 ml of a .05 M solution?
February 5, 2009

biology
A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold water, what would be the approximate increase in the temperature of the water?
January 30, 2009

pre cal
what is the sum of e or 1n
January 11, 2009

precal
(-8)the exponent is -1/3
January 7, 2009

precal
(48)with the exponent of 1/2
January 7, 2009

Chemistry...Please Help
eric is right. pg 682 has it listed. but its the same thing gk was saying, just less work
January 6, 2009

government
What different kinds of opinions do Justices of the Supreme Court write?
December 14, 2008

Math
50%
December 9, 2008

algebra
What is 4x+12=20
November 30, 2008

ap euro
the french goverment tried to improve living standards for the rural poor by a)paying a stipend to poor families b)encouraginf chea; english imports c)hiring the poor on major public works projects d)establishing a nat'l network of free public elementary schools e)...
November 29, 2008

ap euro
After 1700, Spain a) began losing chunks of her empire to britian b)recovered the late 17th century crisis and held on to her american empire c)acquired brazil from portugual d)abandoned california e)withdrew from slave trade
November 29, 2008

ap euro
by the 1770s, the biggest increase in foreign trade was with
November 29, 2008

Case study
Where can i find real company case studies?
November 17, 2008

negative prefixes
I am trying to plan a lesson about negative prefixes for 5th graders and can't find any good websites to help me. I was hoping someone could help me find some resources. If someone knew of a fun or interesting way to teach this lesson that would be even better. Thank you!
November 15, 2008

prealgebra
2=n-(2n+3)
November 12, 2008

physic
a car travels in a straight line for 3 h at a constant speed of 53 km/h. what is the acceraleration? answer in units of m/s2.
November 1, 2008

Pre-Cal
xy=2 {{x^2=3+y^2}}
October 21, 2008

12th grade Physics
a car travels in a straight line for 3 h at a constant speed of 53 km/h. what is the acceraleration? answer in units of m/s2.
October 7, 2008

Ethnic Diversity
yepp in the same class right now... this is crazy I cannot find anything for this Checkpoint. This bits but Ima have to try my best. Even if it means no luck... If anyone can figure it out let me know. =)
September 2, 2008

keybording and word processing
A) Only A
June 9, 2008

Algebra
what is 3 to the square root of 75 plus 2 to the square root of 5
May 16, 2008

Geometry
Given angle 1 = (x + 7)degree, angle 2 = *(2x -3)degree, angle ABC = (x 2nd power) degree, angle D = (5x - 4)degree. Show that angle ABC congruent to angle D
May 1, 2008

literary term definition
what literary term might be used for this? "but if possibility of evil be to exclude good, no good ever can be done
April 18, 2008

math riddle ALGEBRA WITH PIZZAZZ
when do sky divers use decimals?
April 6, 2008

math
12 ln x=44
March 23, 2008

HELPPPPPP
Ms. Sue, you're here to HELP. Not get smart with people trying to find help, which is your job on here. I don't care if she posted it in the math section, if you're not going to help then don't answer! Your job is NOT to get smart and direct people to the right...
March 18, 2008

math-probability
Mary has 3 boxes with Marbles. Eavh box is labeled so that she knows what is in each box. She has 1 box with 2 blue marbles, another box with 2 red marbles and a 3rd box with 1 red and 1 blue marble. Mary's little sister removed all the labels and she placed them back ...
March 4, 2008

math-probability
A King sends for 3 prisoners. HE has 3 black hats and 2 white hats. He blindfolds the prisoners & puts a hat on each. He then removes the blindfolds & allows them to look at each other. He tells them that if they can tell him the color of the hat they have on, he will set them...
March 4, 2008

math-probability
Mary has 3 boxes with Marbles. Eavh box is labeled so that she knows what is in each box. She has 1 box with 2 blue marbles, another box with 2 red marbles and a 3rd box with 1 red and 1 blue marble. Mary's little sister removed all the labels and she placed them back ...
March 4, 2008

Algebra
im confused on how to go about the problem. thats y i need help on how to start.
February 25, 2008

Algebra
All the even numbers from 2 to 98 inclusive, except those ending in 0, are multiplied together. What is the rightmost digit, that is, the units digit of the product? (a) 0 (b) 2 (c) 4 (d) 6 (e) 8
February 25, 2008

Algebra
im confused on how to go about the problem. thats y i need help on how to start.
February 25, 2008

Algebra
The positive integer 4 can be represented as a sum of 1's or 2's in five ways, such as 1 + 2 + 1 and 1 + 1 + 2. Show all the ways that the positive integer 5 can be represented as a sum of 1's or 2's.
February 25, 2008

Algebra
im confused on how to go about the problem. thats y i need help on how to start.
February 25, 2008

Algebra
What is the sum of all possible digits that could fill in the blank in 47_021 so that the resulting five digit number is divisible by 3?
February 25, 2008

Algebra
What is the sum of all two digit positive integers whose squares end with the digits 01?
February 25, 2008

algebra
im confused on how to go about the problem. thats y i need help on how to start.
February 25, 2008

algebra
If a is 50% larger than c and b is 25% larger than c, then a is what percent larger than b? (a) 20% (b) 25% (c) 50% (d) 100% (e) 200%
February 25, 2008

Physics
A volleyball is spiked downward at a 55 degree angle gom the vertical net.If the ball is traveling at 22m/s, what are its horizontal and vertical components?
January 27, 2008

Physics
A snail crawls up a bent piece of grass at 2cm/s. If the grass makes a 75 degree angle to the ground,what are the horizontal and vertical components of the snails velocity?
January 27, 2008

Algebra
my teacher gave it to me an i strictly copied an pasted. i think that i have to solve the equation using algebra.by finding the value for A,plug in in an so forth..is that right???
January 27, 2008

Algebra
Suppose that a, b, and c are digits for which the number 708,16b,8c9 is a multiple of 99. Find a+b+c.
January 27, 2008

Algebra
Digit d is randomly selected from the set {1, 2, 3, 4, 5, 6, 7, 8, 9}. Without replacement of d, another digit, e is selected. What is the probability that the two digit number de is a multiple of 3
January 27, 2008

Calculus
well i know it has to begin and end with a 1,3,4,5, or 7.but i dnt know at to do after...
January 26, 2008

Calculus
well i know it has to begin and end with a 1,3,4,5, or 7.but i dnt know at to do after
January 26, 2008

Pre AP Physical Science
If a person's average speed for a 10.00 kilometer race is 5.644 meters per second, what was her winning time?
January 24, 2008

science
HELP! (UNGERT)due next week tue 11 dec :what the similarities+differences between a light microscope and a electron microscope?
December 4, 2007

science
similarities+differences between a light microscope and a electron microscope?
December 4, 2007

math
I hate u!
December 3, 2007

CHEM
Always polar on mastering chemistry
November 26, 2007

Math
Help!
November 1, 2007

Math
(-2) and -2^2. Why are the answers different?
November 1, 2007

alternative health
what are the cell builders
October 29, 2007

Science
A girl makes a sample of a new material and says that the density of the material is 0.85 g/cm. Can you tell how large a sample she made? How?
October 28, 2007

ap physics
can you please check my answers and help me with one question? During a lie dector test, a voltage of 6 V is impressed across two fingers. When a certain question is asked, the resistance between the fingers drops from 400,000 ohms to 200, 000 ohms. What is the current (a) ...
October 25, 2007

ap physics
can you please check my answers and help me with one question? During a lie dector test, a voltage of 6 V is impressed across two fingers. When a certain question is asked, the resistance between the fingers drops from 400,000 ohms to 200, 000 ohms. What is the current (a) ...
October 25, 2007

Decartes Rule
Can you please check my work? Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So...
October 12, 2007

Decartes Rules
Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. Please check my answers? 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So, are ...
October 10, 2007

Decartes Rule of Signs-Check Problems
Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So, are there 2 or 0 positive ...
October 9, 2007

Decartes Rule of Signs
Could you explain to me decartes Rule of signs? Here are my questions: Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 choices are: a. 2 or 0 positive zeros,2 or 0 negative zeros b.2...
October 9, 2007

physics
528
September 16, 2007

physics
501.60
September 16, 2007

econ
In France each unit of labour can produce 3 bottles of wine or 2 shirts. In Portugal each unit of labour can produce 2 bottles of wine or 1 shirt. Which country has a comparative advantage in producing wine? It would seem that France has the advantage. No its Portugal. The ...
May 22, 2007

BCIS
List netiquette guidelines.
May 21, 2007

Capital Budgeting
A company has revenues of 100 per unit sold. Current sales are 7500 units. Labor rates are 15 per hour. It takes 1.2 hours of labor to make each buggy. Material costs are 13.50 per unit. Figures are expected to remain the same permanently if the company continues to ...
April 24, 2007

GEOLOGY-IMPORTANT
hi i am looking for geologically relevant song lyrics or poetry published after 1990. The stuff cant be writen by a geologist either. i realllly need to find this any help i would appreciate so much!!! thank you.
December 5, 2006

geology-important!
hi i am looking for geologically relevant song lyrics or poetry published after 1990. i realllly need to find this any help i would appreciate so much!!! thank you. http://www.danneyball.com/_51.htm http://www.exploratorium.edu/faultline/activezone/media.html http://www.twin-...
December 2, 2006

Integration
ç e^ãx / ãx dx Your symbols are not legible. Please retype using normal keyboard characters Integration of e^radicalx / radicalx dx
November 30, 2006

Math
ç 2x^3 + 3x^2 + x + 1 dx --------------------- -2x + 1 [2x^3 + 3x^2 + x + 1]/(-2x + 1) = ax^2 + bx + c + d/(-2x + 1) ----> 2x^3 + 3x^2 + x + 1 = (ax^2 + bx + c)* (-2x + 1) + d Find a, b , c and d by equating the coeffients of equal powers of x on both sides. ...
November 30, 2006

Identifying controls and Variables
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special Juice. After an hour, ...
October 1, 2006

Science
I missed a few days and I forgot what the following are Independent Variable Dependent Variable Control and the order of scientific methood This should refresh your memory. An independent variable is the potential stimulus or cause, usually directly manipulated by the ...
October 1, 2006

ap chem0 frequency
how do u do this type of problem... What is the frequency of a photon with a wavelength of 2.25 102 nm? (The speed of light in a vacuum is 2.998 108 m/s. Planck's constant is 6.626 10-34 Js c = fw. c is speed of light which you have, f is frequency for which you must solve...
September 28, 2006

ap chem-3 quest just need 1 answer
A rifle bullet (mass = 1.50 g) is moving with a velocity of 850. mph. What is the wavelength associated with this bullet? Assume your eyes receive a signal consisting of blue light, = 470 nm. The energy of the signal is 2.5 10-14 J. How many photons reach your eyes? You must ...
September 27, 2006

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