Wednesday
August 27, 2014

Posts by PsyDAG


Total # Posts: 18,002

Stastics
You are welcome.
December 13, 2013

Stastics
SEm = SD/√n = 4, 2 or 1 Plug in data and solve for n.
December 13, 2013

Science
Since this is not my area of expertise, I searched Google under the key words "difference heterogenous homogeneous mixture" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=difference+heterogenous+homogeneous+mixture&ie=UTF-8&oe=UTF...
December 13, 2013

statistic (?)
What is your question?
December 13, 2013

Stats
Z = (score-mean)/SEm SEm = SD/√n Assuming a normal distribution, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) and its Z score. Insert Z score and other data into...
December 13, 2013

science very urgent help?
Ho: RTc = RT(non-c) Ha: RTc < RT(non-c) (one-tailed) Ho: b Ha: c
December 13, 2013

Biology
The same as in any other body cell, 46. http://en.wikipedia.org/wiki/Human_genome#The_Human_Reference_Genome
December 13, 2013

Statistics
Standard deviation (SD) = square root of variance Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) related to the Z score. Insert the values into ...
December 13, 2013

Math
Why is the friend dividing by 4? To match the original, each rotation must be a minimum of 90º.
December 13, 2013

Statistics (?)
What is your question?
December 12, 2013

Statistics
SEm = SD/√n From this equation, you can see why it is false.
December 12, 2013

Math help,plz :(
What specific sort of info are you seeking?
December 12, 2013

Math help,plz :(
Convert all the dimensions of the room to whatever scale you are using.
December 12, 2013

Sentence Agreement Errors
subject/verb agreement error "One… were…."
December 12, 2013

Science (?)
What terms?
December 12, 2013

biology
https://www.google.com/search?client=safari&rls=en&q=punnett+square+explained+for+kids&ie=UTF-8&oe=UTF-8
December 12, 2013

English (?)
What is your question?
December 12, 2013

science
Are you talking about a Punnett square? https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8
December 12, 2013

Science
I assume that you are referring to humans. Fertilization takes places when a sperm enters the ovum. If there is no fertilization, there is no zygote and no baby.
December 12, 2013

Science (?)
None listed.
December 12, 2013

Statistics
Using P ≤ .05, if the probability the results would occur by chance is P > .05, you would accept the null hypothesis. By using any level of significance, if it equals or is less than that level, you would be assuming that the results indicate significant differences. ...
December 12, 2013

Statistics
The sample size reduces variability of distribution of means as it gets larger, but does not effect the expected value for the sample mean.
December 11, 2013

Science
Since this is not my area of expertise, I searched Google under the key words "meiosis and genetic variability" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=meiosis+and+genetic+variability&ie=UTF-8&oe=UTF-8 In the future, you ...
December 11, 2013

Math (?)
More data needed.
December 11, 2013

science
Since this is not my area of expertise, I searched Google under the key words "How does x ray radiation affect seed germination? " to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+does+x+ray+radiation+affect+seed+germination%3F...
December 11, 2013

science help plzzzzzzzzzzzzzzz?
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your previous post.
December 11, 2013

math
$90 + $35(5) = ?
December 11, 2013

Math
Since all months have teens with 1s and twenties with 2s, they would be the most often. 0 occurs three times. How about the other numbers? Watch out for February.
December 10, 2013

Logrythmic Math needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
December 10, 2013

Science
Sounds good.
December 10, 2013

Science
When significant contradictory evidence is found.
December 10, 2013

math
$20 + .25m > $37 Solve for m.
December 10, 2013

Science need help
5 or if the experiment is replicated, 2 An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results.
December 10, 2013

statistics
Victor or Junior, did you multiply my response to find the answer?
December 9, 2013

statistics
You have a lot of unnecessary data given to answer your question. .25 * 135 = ?
December 9, 2013

Geometry
A cube would have the least surface area. How well would a cube fit on our shelves?
December 9, 2013

Psychology
Albert Ellis’ ABC Theory A. Activating Experiences — usually some frustration B. Beliefs — what we think about the activating experiences, which mediates the experiences to determine the consequences. Problems are likely to be exaggerated if we 1. Ignore the ...
December 9, 2013

STATS2
B http://en.wikipedia.org/wiki/Policy_analysis
December 9, 2013

math (?)
What are the statements?
December 9, 2013

STATS
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
December 9, 2013

algebra (?)
All what?
December 9, 2013

Religion needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
December 9, 2013

statistics
Arranged in order of value as you have them, with 20 scores, between the 17th and 18th scores would be the 90th percentile (defining the top 10%). Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the ...
December 8, 2013

math
It would not make any difference how they arranged them in terms of age. Each swimmer would still have to swim 100m.
December 8, 2013

Psychological Statistics
What research situations have you chosen? IQ compared to GPA? (r = ?) IQ compared to letter grade in a particular course? (X^2 = ?) I'll leave the rationals up to you.
December 8, 2013

science gr.8
We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.
December 8, 2013

Statistics
1.00 - .49 - .25 = ?
December 8, 2013

science
Since this is not my area of expertise, I searched Google under the key words "compare and contrast uplift and subsidence" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=compare+and+contrast+uplift+and+subsidence&ie=UTF-8&oe=UTF-8...
December 8, 2013

Statistics
Z = (score-mean)/SD You need the values of the mean and standard deviation. Unless you are dealing with a distribution of means, n does not matter.
December 8, 2013

math (?)
Each swimmer is supposed to swim 100m in one stroke. Given "4 by 100," is one swimmer going to swim two laps? Where is the fourth swimmer? What method are you using to break "up the distance of 400 meters by age"? The youngest gets to swim 200 meters? Each ...
December 8, 2013

Math
I didn't see any answers. Please only post once. Repeating posts or asking for help in another post will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
December 8, 2013

Math
100 + 5 Equilateral means equal sides.
December 8, 2013

Buisness Math (?)
No matrices posted.
December 8, 2013

BIOLOGY
https://www.google.com/search?client=safari&rls=en&q=darwin+lamarck+comparison&ie=UTF-8&oe=UTF-8
December 7, 2013

BIOLOGY
Since this is not my area of expertise, I searched Google under the key words "plant animal differences" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=plant+animal+differences&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
December 7, 2013

BIOLOGY (?)
What problem are you considering?
December 7, 2013

BIOLOGY (?)
What hypothesis are you considering?
December 7, 2013

BIOLOGY
A control group is used to see if the same results would occur without the independent variable. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent ...
December 7, 2013

BIOLOGY
To start, see if it is plugged in the wall socket. Since this is not my area of expertise, I searched Google under the key words "repair electric fan troubleshoot" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=repair+electric+fan...
December 7, 2013

Statistics
Although you indicate n = 17, you only have 16 scores listed. Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard...
December 7, 2013

Math
From the way you have defined the problem, you cannot satisfy both criteria in one spin, unless they indicate the same number. 2, 4, 6, and 8 are multiples of 2. 4 = 2 * 2, so 2 is a factor of 4. 2 is one of the 8 alternatives = 1/8
December 7, 2013

SAT MATH
Every other number is odd, so 3000/2 = ?
December 7, 2013

STATISTICS
What you want is the probability of getting 1, 2 or 3 hermaphrodite plants. However, what is the total number of plants? If there are only three, then the answer = 1 (certainty). If the events are independent, the probability of both/all events occurring is determined by ...
December 7, 2013

Healthcare Statistic
Ho: errors in shift one = errors in shift two Use principle indicated above to give second Ho.
December 7, 2013

Healthcare Statistic
Accepting Ho when it is actually false.
December 7, 2013

Healthcare Statistic
Rejecting Ho when it is actually true.
December 7, 2013

Healthcare Statistic
The smallest value.
December 7, 2013

Statistics
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See later post. Again, what are the total number of plants?
December 7, 2013

math
See previous post.
December 7, 2013

psych
I searched Google under the key words "biological and social influences of temperament" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=biological+and+social+influences+of+temperament&ie=UTF-8&oe=UTF-8 In the future, you can find ...
December 6, 2013

Statistic
Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard deviation = square root of variance 95% = mean ± 1.96 ...
December 6, 2013

5th grade science
There are two criteria for your answer. What is a nonmetal? What is not an electrical conductor? What is left?
December 6, 2013

statistics
Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard deviation = square root of variance 95% = mean ± 1.96 ...
December 6, 2013

science (?)
What are your choices?
December 6, 2013

science
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
December 6, 2013

Intermediate FT
Multiply equation by x. 3 + 4 + 2x = 2x Equation has no solution.
December 6, 2013

Statistics
From your limited data, there is no variability measure for t-test. I wouldn't even know how to figure the mean. You might want to use chi-square test for whatever you are hypothesizing. To use the Chi-square (X^2) method: X^2 = ∑ (O-E)^2/E, where O = observed ...
December 6, 2013

math
Do you have a calendar? Count the days.
December 6, 2013

Science
Since this is not my area of expertise, I searched Google under the key words "nutrient definition" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nutrient+definition&ie=UTF-8&oe=UTF-8 In the future, you can find the information ...
December 6, 2013

math?
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. With three unknowns, you need more data.
December 6, 2013

Statistics
This is a little clearer. The larger portion (body) for positive Z scores is to the left. For negative Z scores, it is to the right. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/...
December 6, 2013

Statistics
We cannot draw on these posts. The Z score is your score in terms of standard deviations from the mean. There would be a tail on both sides. Are you looking for the smaller portion? https://www.google.com/search?client=safari&rls=en&q=normal+distribution+standard+deviation&ie=...
December 6, 2013

math (?)
No problem at the bottom.
December 5, 2013

Biology
It used to be phenotypes, but if genomes are available, it could be either.
December 5, 2013

psychology
Since typically children do not have as many resources to deal with these conditions, I would assume their conditions are likely to be more severe and long-lasting.
December 5, 2013

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability [(1-.95)/2] = Z = 1.96. You divide by 2, because you are considering both above and below. 95% = mean ± 1.96 SEm The ...
December 5, 2013

Science need help
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results. 5 and 6.
December 5, 2013

Statistics
Next time, give your response, so we can evaluate it. True
December 5, 2013

Statistics
True
December 5, 2013

Statistics
True
December 5, 2013

Biology
I'm not sure exactly what you are asking. In psychology, positive control (or at least an attempt at it) involves incentives and rewards. Negative aspects involve punishment or lack/removal of reward. If this is what you are seeking, you should be able to think of examples.
December 4, 2013

Algebra
You got them all correct.
December 4, 2013

Math
Multiply first equation by 2. Assuming that y was accidentally eliminated in the second equation. 4x - 10y = 6 -4x + 10y = -6 Adding the two together: 0 = 0. One equation is just the negative of the other. In other words, if you multiply one equation by -1, you get the other.
December 4, 2013

Statistics (?)
What is your question?
December 3, 2013

Science (?)
What type of wave?
December 3, 2013

math
4/5 + 4/5 = ?
December 3, 2013

math
3/5 * 10 = ?
December 3, 2013

math
1/2 * 1/3 = ?
December 3, 2013

math
3 * 4 = ?
December 3, 2013

statistics (?)
What is your question? If you want to know Kelsey's score: Z = (score-mean)/SD -1.85 = (score-72)/4
December 3, 2013

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