Monday
October 20, 2014

Posts by PsyDAG


Total # Posts: 18,492

Algebra 2
Lacking data.
October 9, 2014

math!
x = W 2x = L x-3 = H H * L * H = volume
October 9, 2014

Math Need Help. No Idea how to solve
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.025) and its Z score. 95% = mean ± Z SEm SEm = SD/√n
October 8, 2014

Sociology (Statistics) Confidence Level
95% = mean ± 1.96 SEm SEm = SD/√n = 1/√35 = 1/5.92 = .17 .17 * 1.96 = .33 95% = mean ± 1.96 SEm = 3 ± .33 = 2.67-3.33 Rounding error?
October 8, 2014

statistics
Parameters are data on total populations, while statistics are data on portions of a population (samples).
October 8, 2014

statistics
From your data, he did equally well on both exams.
October 8, 2014

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. Second equation has wrong SD.
October 8, 2014

MATH (STATS)
A) SEm = SD/√n B) 95% = mean ± 1.96 SEm C) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. Substitute that for the 1.96 in B equation.
October 8, 2014

Algebra
What problem?
October 8, 2014

statistics
22 is two SD below the mean, in other words, Z = -2. 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 the Z score and distance from the mean. ...
October 8, 2014

Statistics-Help please??
Was this the equation they gave you? Z = (score-mean)/SD Just insert values and solve for Z.
October 8, 2014

statistics
What is your question?
October 8, 2014

Sociology (stats) help
Continue calculations to find Z. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the least proportion/probability for each Z score. Either-or probabilities are found by adding the ...
October 8, 2014

Psychological Statistics
Z = (score-mean)/SD Insert you data to calculate the mean.
October 8, 2014

General Psychology
Nicotine
October 8, 2014

psychology
http://drdavespsychologypage.homestead.com/Decision_Trap.pdf
October 7, 2014

psychology
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.
October 7, 2014

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.
October 7, 2014

statistics
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 the Z score.
October 7, 2014

Science
I would agree.
October 7, 2014

Satistics
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 (.10) and its Z score. Insert all data in above equation.
October 7, 2014

statistics
Z = (score-mean)/SD Compare the two Z scores.
October 7, 2014

Stats
Probability cannot be negative or greater than 1.
October 7, 2014

math
What are your choices?
October 7, 2014

science
https://www.google.com/search?client=safari&rls=en&q=speed+of+a+falling+object&ie=UTF-8&oe=UTF-8&gws_rd=ssl
October 4, 2014

Algebra
x^2 + 4x - 10 = 0 Ten factors into 2 and 5. If you had a typo: x^2 + 3x - 10 = 0 This factors into (x+5)(x-2) = 0 Do you have a typo?
October 4, 2014

statistics
.01/3 = ?
October 4, 2014

statistics
Where? Grade book?
October 4, 2014

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Yes, -7 * -7 * -7 * -7 * -7
October 4, 2014

math
1000 - 310 - 180 = B
October 4, 2014

Statistic
What figure? What is your question?
October 3, 2014

Math
x - .32x = 120 Solve for x.
October 3, 2014

Math
Horizontal axis (X axis, abscissa) is the values of the scores, while the vertical axis (Y axis, ordinate) would indicate the frequency of each score. I hope this helps.
October 2, 2014

Biology
https://www.google.com/search?client=safari&rls=en&q=protein+synthesis+importance&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
October 2, 2014

Biology
https://www.google.com/search?client=safari&rls=en&q=product+of+the+oxidation+of+methanol&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/...
October 2, 2014

statistics
Unbiased estimators can be generalized more accurately.
October 2, 2014

writing,essay
How do you know who you are without knowledge of your past? How do you define yourself? Think about it.
October 2, 2014

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
October 2, 2014

math
120/5 units by 75/5 units
October 1, 2014

math
Any negative number squared is positive. (-x)^4 = (-x)^2 * (-x)^2 If a is -(x^4), then it is negative. The only other negative I see is e.
October 1, 2014

Biology
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. https://www.google.com/search?client=safari&rls=en&q=factors+affecting+...
October 1, 2014

Stat
99% = mean ± Z*SEm SEm = SD/√n Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. Insert Z score with other data in the first equation.
October 1, 2014

Statistics
From the way you posted, I cannot understand your data. However…. 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 for each Z score.
October 1, 2014

Health
Agree, however, it does effect the adrenal glands via ACTH, Adrenocorticotropic hormone.
October 1, 2014

statistics
Then you have a bimodal distribution; use both modes.
October 1, 2014

Science
https://www.google.com/search?client=safari&rls=en&q=science+indicators&ie=UTF-8&oe=UTF-8&gws_rd=ssl
October 1, 2014

Math
Need to convert meters to feet. 4m = 13.12 feet She has two rolls. 2 * 13.12 = 26.24 She needs the amount below to connect the speakers. 2*2 + 2*11 = ? Convert discrepancy from feet to cm. 1 foot = 30.48 cm
October 1, 2014

Science quick question
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 other post.
September 30, 2014

Math
0 is the X value (abscissa, horizontal axis) and -2 is the Y value (ordinate, vertical axis).
September 30, 2014

Math
(180º-116º)/2 = ?
September 30, 2014

science
1 Knot = .5144 m/sec
September 30, 2014

Stat
Right.
September 30, 2014

Stat
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. 99% = mean ± Z SEm SEm = SD/√n
September 30, 2014

Communication
1-2. Agree 3. Disagree. Look up definition of prototype. 4. Agree 5. DK for sure, but would go with your answer. 6. Would go more with A 7. Disagree, when you marry someone are you biologically related? 8. Don't avoid conflicts. This would lead to long-term unexpressed ...
September 30, 2014

Human and social biology
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.
September 29, 2014

computers
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. However, to start you out, have you ever typed a paper on a manual/electric typewriter as ...
September 29, 2014

MATH HELP
Is there a 5 in the tens digit space?
September 29, 2014

Algebra
let x = # marbles in bag. 3x + 2 = 29 Solve for x.
September 29, 2014

Math
42 = 8x - 14 Add 14 to both sides, then divide both sides by 8.
September 29, 2014

math
lack sufficient data.
September 29, 2014

Logic?
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Correct.
September 29, 2014

Algebra 1
From your data: 1/2 + 1/4 = 3/4 3/4x = 16 Multiply both sides by 4/3.
September 29, 2014

statistics
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 (.07) and its Z score. Insert Z score in equation above to find raw score.
September 29, 2014

discrete distribution
No data given. 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
September 28, 2014

algebra
Insufficient data.
September 28, 2014

public speaking
No choices listed.
September 28, 2014

statistics (Bill)
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. I would want the one with the lowest variability. SD is a measure of ...
September 28, 2014

statistics (Tom)
What is your question?
September 28, 2014

statistics
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 (.10) and its Z score. Insert Z score and other relevant data in equation above to find the raw score.
September 28, 2014

stats
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. However, I will start for you. a) 15/total cubes = ? b) (total cubes-15)/total cubes = ? ...
September 28, 2014

stat
No, it changes the odds of picking a spade. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 13/52 * (13-1)/(52-1) = ?
September 28, 2014

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
September 28, 2014

Math (money)
(1 - 1/6)x - 9 = 16 Solve for x.
September 28, 2014

science 2 quick questions
You need to search through the sources. 1. Here one of the sites you said didn't help. Look through it carefully. http://www.merckmanuals.com/home/infections/viral_infections/overview_of_viral_infections.html 2. Look through these sources closely. https://www.google.com/...
September 28, 2014

stat
Z = (score-mean)/SD Need mean and standard deviation for ALL CITIES to find Z scores.
September 28, 2014

statistics
Even or Even = 3/6 Either-or probabilities are found by adding the individual probabilities. <5 = P(1, 2, 3, or 4) Die only has values 1-6.
September 28, 2014

To ANY SCIENCE HELPER
https://www.google.com/search?client=safari&rls=en&q=methods+of+viral+infection&ie=UTF-8&oe=UTF-8&gws_rd=ssl https://www.google.com/search?client=safari&rls=en&q=virus+helpful+to+host&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more ...
September 28, 2014

Biology
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.
September 27, 2014

social statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.025) and its Z score. 95% = mean ± Z SEm SEm = SD/√n
September 27, 2014

Psychology
I will give some problems I think may be happening and let you relate them to critical thinking. How were the 100 students selected? Would the method of selection allow you to generalize to students as a whole? What level of significance was used? .01? .05? .10? Was Penny'...
September 27, 2014

Statistics
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 (±.40) and the corresponding Z scores. Insert in above equation to get the raw scores.
September 27, 2014

statistics
Z = (score-mean)/SD Which one has the highest Z score?
September 27, 2014

Science
Since it is called "carbon dating," you can automatically eliminate A and B. Whenever you don't know the right answer in multiple choice, you can get closer to the right answer by eliminating those that you know are wrong. The first C, carbon 14.
September 26, 2014

Stats
No, it would be mean ± 2SD.
September 26, 2014

Algebra 2
Online "^" is used to indicate and exponent, e.g., x^2 = x squared. Our steps in what? What is your question? Repeat with correct symbols.
September 26, 2014

Biology question plz
There is no D given.
September 26, 2014

math
Without the goats, total = 38. H = G + D D = G + 5 Substitute G+5 for D H = G + G + 5 = 2G + 5 H + G + D = 38 Substitute G+5 for D and 2G+5 for H. 2G+5 + G + G+5 = 38 Combine terms to solve for G, then D.
September 25, 2014

statistics
http://drdavespsychologypage.homestead.com/Two___Two_____four.pdf
September 25, 2014

Algebra 2
Right
September 25, 2014

Math
S^2 = 27 Solve for S.
September 25, 2014

In English?
Please translate.
September 25, 2014

maths
100(1 - .40) = ?
September 24, 2014

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. See previous post.
September 24, 2014

career math
I assume you are talking about the bottom of each roll. Area = π * r^2 area = 3.14 * 121 = ?
September 24, 2014

algebra. help!
True 16 = 4x - 4 No, add 4 to both sides, then divide by 4.
September 24, 2014

Science
Right, A, B and C are all parts of atoms.
September 24, 2014

math
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 787,878 878,787
September 24, 2014

algebra
.50 + .10t = 2.00 Solve for t.
September 24, 2014

Statistics 7
We do not have access to web file.
September 24, 2014

Statistics 2
Z = (score-mean)/SEm SEm = SD/√n Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of the Z score.
September 24, 2014

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