Tuesday
September 30, 2014

Posts by PsyDAG


Total # Posts: 18,335

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

science
Since this is not my area of expertise, I searched Google under the key words "nucleon structure functions" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nucleon+structure+functions&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
September 24, 2014

Math
V= π * r^2 * h 339.3 = 3.14 * r^2 * 3 3.14 * 3 = 9.42 Divide both sides by 9.42, then find square root.
September 24, 2014

math
See previous post.
September 24, 2014

math
x/1.5 = 75/50 Solve for x.
September 24, 2014

algebra
mean = ∑x/n 90 = (92 + 92 + 83 + x)/4 Solve for x.
September 23, 2014

algebra
Parentheses would clarify the problem.
September 23, 2014

Algebra
D = Q + 20 .10D + .25Q = 5.50 Substitute Q+20 for D and solve for Q. Insert Q value in first equation to find D. Put both values into the second equation to check.
September 23, 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 later post.
September 23, 2014

Algebra 1
1) See later post. 2) An inequality is treated just like an equation, except that multiplying/dividing by a negative value reverses the carat (< to >). Multiply both sides by 5. 30 + a < 25 Subtract 30 from both sides.
September 23, 2014

Science
Less expensive to indicate possible problems.
September 23, 2014

Science! Help
No, if both parents homozygous recessive, all offspring will be recessive. Use Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square+worksheet&ie=UTF-8&oe=UTF-8&gws_rd=ssl
September 23, 2014

science Help
No. Long-haired = ss Short-haired = Ss Use Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square+worksheet&ie=UTF-8&oe=UTF-8&gws_rd=ssl
September 23, 2014

Math
Right.
September 23, 2014

algebra 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.
September 23, 2014

Science Help
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 23, 2014

Science Help
Definitely. https://www.google.com/search?client=safari&rls=en&q=punnett+square+worksheet&ie=UTF-8&oe=UTF-8&gws_rd=ssl
September 23, 2014

Statistics
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 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 ...
September 23, 2014

math
5 1/3 = 5.333333333…. How many decimal places do you want?
September 23, 2014

Algebra
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 scores. Multiply by 100 for percentage.
September 23, 2014

math
-2x+14
September 23, 2014

Math Algebra
150 + 2(pairs) = ?
September 23, 2014

Math
(1 - 1/5)x = 240 Solve for x.
September 23, 2014

English?
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Do you have alternatives given? see? tell? perceive? distinguish? make out?
September 23, 2014

Math
51/80 * 100 = ?
September 23, 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 later post.
September 23, 2014

Math
1 Kg = .00098420653 (UK long tons = tonnes?)
September 23, 2014

math
-67/12 divided by 12 = -67/144 = ?
September 23, 2014

math
L/3 = R 15L = H L + R + H = L + L/3 + 15L = 1.1 Solve for L, then R.
September 23, 2014

sociology
What does your text say?
September 23, 2014

Statistics?
What is you question?
September 23, 2014

statistics
"Unimodal and symmetrical" = normal Z = (score-mean)/SD variance = SD^2 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 scores. Multiply by 60.
September 23, 2014

dana
What are your choices?
September 23, 2014

algebra
Need to repeat original question, otherwise we don't have any idea about what you are asking.
September 23, 2014

math
Without any further data, I would assume a minimum of 4.
September 23, 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 proportions/probabilities related to the Z scores. For percentage, multiply by 100. For n, multiply by 50.
September 23, 2014

introduction to psychology ll
What are your choices? speak? walk? over 65?
September 23, 2014

introduction to psychology ll
What are you choices?
September 23, 2014

Statistics
Cannot draw on these posts. Z = (score-mean)/SD a-c. 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 scores. Multiply by 100. d-e. Use same table for .20 ...
September 22, 2014

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.
September 22, 2014

math
Since 4^2 = 16, the answer must be slightly less that 4, 3.9?
September 22, 2014

math
x/2 + 3 = 17 Solve for x.
September 22, 2014

Biology
Without photosynthesis, most plants would not exist. Since we eat plants and other eaters of plants, we would not have a food source. No food --> no energy.
September 22, 2014

algebra
D, If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
September 22, 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 22, 2014

math
It would help if you proofread your questions before you posted them. If each ate 1/3 (1/3+1/3+1/3=1), there would be no 1/4 for Don.
September 22, 2014

make up
.10x = $55 x = 55/.1 = 550
September 22, 2014

Algebra
agree
September 22, 2014

psych 42
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. Multiply by 100.
September 21, 2014

statistics
Z = (score-mean)/SD T = 50 + 10Z 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. Multiply by 100 to get percentage.
September 21, 2014

Biology
If not matched, the donation will most likely kill the recipient.
September 21, 2014

science
k = 1000, m = 1/1000 Never heard of h.
September 21, 2014

Math Help!!
9.95 + .10m = 12.95 + .08m Solve for m.
September 21, 2014

Stats
Didn't you ask this question before? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .60 * .44 = ?
September 21, 2014

statistics
It would help if you proofread your questions before you posted them. What is your question? Just guessing… 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...
September 20, 2014

statistics
If the study is of all members of the group for which conclusions will be made, it is a parameter. If of only a portion, it is a statistic.
September 20, 2014

science
Right.
September 19, 2014

Science
Agree for all.
September 19, 2014

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