Friday
August 1, 2014

Posts by PsyDAG


Total # Posts: 17,990

algebra 2 (?)
Data missing. What are your choices?

Statistics
You are welcome.

Statistics
Right.

STATISTICS
Whichever correlation is closest to ±1 is right. That is choice D.

Statistics
First one is B. I would agree with the second too, if P<.05.

math
The one closest to a square, 20 by 20.

Math
Revise your thinking. 1. Single blind gives the control group a placebo — a substance that is inert, it has no physical effect. Subjects don't know if they are in experimental or control group to reduce placebo effect, a change in behavior solely due to believing that...

math (long div.)
Divide 6984 into 8.0000000. 6984 into 8.000 = .001 with remainder of 1016. Drop the next zero to give you 10160, divided by 6984 = 1 with remainder of 3176. Drop the next zero to give you 31760, divided by 6984 = 4 with remainder of 3824. So far the answer is .00114. Continue ...

Grammar
with = not algebra for = not trig However, "for" version is a little awkward. "I want to take algebra instead of trigonometry" would be better.

5th grade math (?)
Insufficient data.

5th grade math
2L + 2W = 88 88 factors into 2 * 2 * 2 * 11 Use that info to find your L and W, then multiply L*W = area.

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

Statistics
1. Definitely NOT II. 2. How did they know that the students started with the "same levels of mathematical achievement"? Was Britain's National School-Leaving Exam given previously? 3. Right.

Math
Since lurking variable is essentially the same as confounding variable, I don't think it is B. Without more data, my best guess would be E.

math
1.2 meters per minute

Probability
33/211 = ?

maths
It would help if you proofread your questions before you posted them. Online "√" (v+option keys) is used to indicate square root. √(7+2(1+√3)x(1+√5) has no reference to y or z.

math
Estimate = 4 * 2000 = ? Accurate = 4 * 2150 = ?

ACT Math
I agree with you. 33-16 = 17girls 24-17 = 7 It may be a typo on the answer sheet.

maths I need answer
7+5 = 12 7 * 5 = 35 75

stat
(6+2+1)/(6+2+1+8+3) = ?

Statistics
1. correct 2. Wrong. Look up definitions of 'sample" and "Census". 3. Wrong. Look up sampling error. 4. Wrong. Look up statistic and parameter. 5. Wrong. Look up statistic and parameter. 6. Right. 7. Right. 8. Right. 9. Right. 10. Right. 11. Right. 12. Wrong...

Algebra
1. 4 - 7(8)/(-8) 4 - 56/(-8) -52/-8 = ? 2. 4-3 = 1 1^2 = 1 6(1) -3(2) = ?

Algebra
Rearranging the terms might help to see what is required. 1. 23/39-5/39 = 18/39 = 6/13 2. 2/12-7/12 = -5/12

Probablity
43/242 = ?

8th Grade Math
Anon failed to notice that t is also in the denominator. Multiply both sides by 2t. 5 - 2t^2 = 6t + 3 Combine like terms. 2 - 2t^2 -6t = 0 Multiply by -1. 2t^2 + 6t - 2 = 0 I also get no solution, but at least my equation is correct.

maths (incomplete)
Inadequate data.

statistics (incomplete)
1. You answered this in your second question. There is no data to help in making a decision.

Biology (incomplete)
Without more data, I am confused too. We need to know more about the context of the equation.

Statistics
16. 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 related to to the Z score. 17. Use same equation and table. 18. Use table to find P = ± ,45 to ge...

Algebra
-3 1/4 = -13/4

mathematics
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.

math
mean = ∑x/n 6 = (x+y+z)/3 9 = (x+y+z+t+u+v+w)/7 63 = (x+y+z+t+u+v+w) 18 = (x+y+z) mean = (63-18)/4 = ?

math
(350-245)/30 = ?

Math 4th grade
There is no underlining. Four hundred eighty-eight, four hundred twenty-three, forty-six

Science
You cannot use just one word to describe both what it is like and what it is not like. Cell - box metabolism - burning

science
Have you heard of physics?

Biology
They are both, but MZ twins have identical genetics, you would expect their correlations to be higher. Lower correlations suggest environmental. http://drdavespsychologypage.intuitwebsites.com/Decision_Trap.pdf

Pre-algebra
Multiply both sides by 9. 7-4 = 3y You can take it from here.

Pre-algebra
Right.

science............help
Here is a little more to think about. http://drdavespsychologypage.intuitwebsites.com/Proving_a_Point.pdf

science............help
As far as I know, we don't know WHY they exist. We have enough to do to find out what these laws are. From a religious point of view, you might say it is God's will.

science
People used to think the earth was flat and the sun revolved around the earth. To think otherwise, even when evidence contradicted this, used to be considered heresy and was severely punished.

science
Sounds as if s/he is justifying the scientific method and recognizing the biases that each person/culture have.

Math
It is not greater. .01 is ten times smaller than .1.

Math
Parameter uses all the subjects in a category, while a statistic only uses a portion. Use that information to re-evaluate your answers.

Statistics
1. 79/grand total = ? 2. df for what?

Biology (Science)
Previous knowledge can lead to a hypothesis, thus seems to support it. We can accept a hypothesis, but that is not the same as "proven to be true." http://drdavespsychologypage.intuitwebsites.com/Proving_a_Point.pdf

Biology (Science)
Are you just guessing? 1. What peers are mentioned? Not frogs. Data 2. Observation 3. "statics" or statistics? Although "Analysis" is not listed in your word bank, it applies here. 4. What are other scientists considered to be? 5. This is the only one you g...

Health
You're welcome.

Health
Definitely.

Biology
We cannot draw Punnett squares on these posts. http://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8

Science
Availability of food?

Biology
Since this is not my area of expertise, I searched Google under the key words "huntington disease genetic probability" to get this source: Huntington's disease is inherited in an autosomal dominant fashion. The probability of each offspring inheriting an affected...

health
5,352/100,000 = 5.4%

math (?)
What is your question?

biostat
No group with both diet and exercise? ANOVA?

introduction to psychology 1
Stimulus?

introduction to psychology 1
It can be part of a research method.

Stats
Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n If only one SD is provided, you can use just that to determine SEdiff. Find table in the back of your statistics text labeled something like "area...

Math
Area = 1/2 (6h+16)(3h-8)

Statistics
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.

Statistics
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.

statistics (?)
What is your question? There is no data.

Algebra
900 + 20r > 1500 + 14(r-15)

Science
Since this is not my area of expertise, I searched Google under the key words "primary stars of the constellations Leo and Lyra" to get these possible sources: http://www.google.com/search?client=safari&rls=en&q=primary+stars+of+the+constellations+Leo+and+Lyra&ie=UTF...

pre-algebra
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. (-5*-12)/-4 = 60/-4 = -15 A minus times/divided by a minus is a plus. A minus times/divided by a plus is a minus.

statistics
Z = (score-mean)/SD

interpersonal communcation
Communication?

multiple choice / define
Since this is not my area of expertise, I searched Google under the key words "transfer price" to get these possible sources: http://www.google.com/search?client=safari&rls=en&q=transfer+price&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire m...

biology (incomplete)
What organism? What stimulus? Flight or fight? Ignore? Approach?

Statistics
If not E, I would pick C for the same reason.

Statistics
I would pick E. Out of 100 factors, P = .03 is the probability that 3 would have statistical significance.

Science
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.

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.

math
95% = mean ± 1.96 SEm SEm = SD/√n

algebra
Rupees * residents = 202500 √202500 = ?

Statistics
Biased. First of all, are you dealing with bachelors, masters or doctorate levels? Second, they probably do not represent the total population of degree graduates, but only those in your institution, which may or may not be a good representation of the population.

statistics (?)
Have you followed the "steps in Problems 1 through 4"?

Math- combinations
You can get ten (10) different numbers in each space. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

Maths (?)
The minimum of what?

Statistics
Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z score.

englsih
What they care about most is money, stock prices and problems concerning finance. They may never notice that there are lots of social problems(COMMA) which actually need their concern. Make sure that it is clear who the "they" are.

STATISTIC
We do not do your homework for you, especially tests. 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. However, I will start you out. 1. SEm = SD/√n 2. 90% = mean ±...

statistics
Right.

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

statistics
Z = (mean1 - mean2)/standard error (SE) of difference between means Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score. Are you using two-tailed test or one...

Statistcs
a. Best point estimate from your data is your sample mean. b. 95% = mean ± 1.96 SEm SEm = SD/√n c. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probabil...

Interpersonal Communication
It would also help to explain your acronym.

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

math
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.

statistics
Relative dispersion, sometimes called the coefficient of variation, is the result of dividing the st. dev. by the mean, hence it is dimensionless (it may also be presented as a percentage). So a low value of relative dispersion usually implies that the st. dev. is small in com...

Psychology
http://en.wikipedia.org/wiki/Electroconvulsive_therapy#Degree_of_effectiveness_and_risks

Psychology
Note that electroconvulsive therapy (ECT) and shock therapy are essentially the same thing.

Psychology
What does behaviorism emphasize?

Psychology
Take into account what happened before he got "so down."

putting it all together
Agree.

putting it all together
Agree.

Psychology- HELP!!!!
Right.

Psychology
If you don't know the right answer, try to eliminate wrong alternatives. Which alternative has a person doing something?

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