Thursday
June 30, 2016

Posts by PsyDAG

Total # Posts: 22,027

Statistics
Need to know standard deviation (SD). 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 the Z score. Multiply by 1000.
June 30, 2016

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(bb) = 1/4 * 1/2 P(Aw/h) = 1/4 * 1/2 Either-or probabilities are found by adding the individual probabilities.
June 30, 2016

science
Light does not go through the iris.
June 30, 2016

math
It would help if you proofread your questions before you posted them. What is "1-3"?
June 30, 2016

Probability :(
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.
June 29, 2016

Biology
Since this is not my area of expertise, I searched Google under the key words "maintain water quality" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=maintain+water+quality&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
June 29, 2016

science (?)
What subsystems do you mean?
June 29, 2016

Psychology
http://www.simplypsychology.org/cognitive-dissonance.html
June 28, 2016

Math(AssignmentDueToday)
If Mail is almost a meter, would the scaled down version be larger? x = 38.2/19100 = ?
June 28, 2016

Math(Please 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.
June 28, 2016

Math
diameter = 2r 30/7 = 4 50/7 = 7 Area used = 28 * πr^2 = ? Subtract ? from 50*30 for waste
June 27, 2016

Math
No diagram. Cannot copy and paste here. Assuming the wall is 10 feet high: 12(10 - 2.75) - 36/2 = ? inches That is extremely low to hang a picture. Usually they are hung at close to eye level.
June 27, 2016

psychology
The reduction of tension and anxiety is immediate and negative.
June 27, 2016

Abnormal Psychology
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.
June 27, 2016

biology
I know blue eyes are recessive to brown, but I have no idea about the dominance/recessive relationship for straight/curly, dark/red hair.
June 27, 2016

stats
The probability of getting any one question right = 1/6. "at least 4 of the 6" means 4, 5 or 6 correct. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(4) = 1/6^4...
June 27, 2016

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
June 25, 2016

Math
10 + 19 = 29
June 25, 2016

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.
June 25, 2016

Algebra
Cannot graph on these posts.
June 24, 2016

Math
Cannot graph on these posts.
June 24, 2016

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.
June 24, 2016

Psychological Stats
No need to play, just insert data and solve. Z = (score-mean)/SD
June 23, 2016

math
Ten thousands
June 22, 2016

Math (?)
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. What is your question?
June 22, 2016

math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. x^2 - 6x + 9 = 64 x^2 - 6x - 55 = 0 Factor. What factors of -55 will add to give you -6?
June 22, 2016

maths (?)
It would help if you proofread your questions before you posted them. What is a "lakhs place"?
June 22, 2016

English
1, 2. Can indicates ability, while may indicates permission. 3 is awkward. 4, 5. You can feel better without actually being better. Symptoms may temporarily vanish. 7. Typical?
June 22, 2016

English
#2 infers that you don't look great without your uniform.
June 22, 2016

math
Smallest = 123,456,789.0 Largest = 9,876,543,210
June 22, 2016

math (?)
Cannot be done only knowing that 5 points are awarded for each correct answer. Score would be a multiple of 5. What information is missing?
June 22, 2016

Statistics
SEm = SD/√n Variance = SD^2
June 22, 2016

math
MEAN = ∑X/n = (7.75 + 6.30 + 6.30 + 7.00)/5 = ?
June 21, 2016

Math Geometry (?)
It would help if you proofread your questions before you posted them. "and and are"?
June 21, 2016

math
It would help if you proofread your questions before you posted them. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Do you mean 25-x^2 = 4x In that case, x^2 + 4x - 25 = 0
June 21, 2016

math
thousanths
June 21, 2016

Math (?)
It would help if you proofread your questions before you posted them. "hire purchase the...."?
June 20, 2016

Biology
23 pair before and after
June 20, 2016

Math(Please Help Me, Assignment Due)
B) 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 Z = (score-mean)/SD ...
June 20, 2016

Algebra
Boarding rate + miles(mileage rate) = Total cost
June 19, 2016

The mind at work (?)
What are your choices? Incentive? Encouragement?
June 19, 2016

algebra (oops)
I read square root. x^2 + 3x = 10 x^2 + 3x - 10 = 0 Factor.
June 19, 2016

algebra
Assuming the number is the same for multiple and square root: 3x + √x = 10 Solve for x.
June 19, 2016

Maths
The square lawn is 12 by 12, assuming that the path is not part of the lawn. With the path, the side is 12 + 2(1.5) = ?
June 19, 2016

algebra
B = 2H 25 = .5HB Substitute 2H for B in the second equation and solve for H.
June 19, 2016

algebra
L = W + 3 2L + 2W = 34 Substitute W+3 for L in the second equation and solve for W.
June 19, 2016

math
78,654
June 19, 2016

algebra
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.
June 19, 2016

maths
Is this what you are being asked to do? 64 = 64 63.6 = 64 50.3 = 49 18.7 = 16 You do the rest.
June 19, 2016

math
agree
June 17, 2016

statistics
That you are 95% sure that the true mean lies between those limits.
June 17, 2016

math
2/3x = 2.24 Solve for x then divide by 4.
June 17, 2016

Management Science
5 hours, A = $50, B = .15 * 5 * 60 9 hours, A = 50 + .25*60, B .15 * 9 * 60
June 17, 2016

Math
F = 62 - S F - 15 = 7(S-15) Substitute 62-S for F in the second equation and solve for S.
June 17, 2016

math (?)
Approximation of what? What following? Cannot copy and paste here.
June 17, 2016

maths(?)
It would help if you proofread your questions before you posted them. "Crore?" thirteen thousand nine hundred forty eight = 13,948
June 17, 2016

maths
Assuming it is a progression, I agree.
June 16, 2016

MATH
First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. It would help if you proofread your questions before you posted them. Don't know what "FO," "VO" and "BA" ...
June 16, 2016

communication
Do others make comments about you to you? If so, do you agree with those comments?
June 16, 2016

math
How much time is spent on each job?
June 16, 2016

statistics
What is the list of numbers measuring? Depth? For shell length, 99% = sample 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 (&...
June 16, 2016

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. Multiply by 100.
June 16, 2016

Maths (?)
What is your question?
June 16, 2016

Math
Could be any one of several, starting with 4489, 3368, 2247.... Do you have more data?
June 16, 2016

Maths (?)
More data needed.
June 16, 2016

geometry (?)
Not geometry. What is your q1uestion?
June 15, 2016

geometry (?)
No following shown. Cannot copy and paste here.
June 15, 2016

Math
Don't understand the second equation.
June 15, 2016

Math
A. Tires = cars * 4 b. Minutes = days * 24 * 60
June 15, 2016

Algebra
2008-1998 = ? Substitute that for x and solve.
June 15, 2016

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.
June 15, 2016

Math
1. +2 2. -9
June 14, 2016

English
1, 2, 3, 4. Yes "Was" better than "is," because planning was done previously.
June 13, 2016

Stats
n*p = 30 * .34 = ?
June 13, 2016

Science
If they have landed, zero. If not, .98m.
June 12, 2016

math.
3 * 39 * 10 = ?
June 12, 2016

Psychology
I would say classical experiments.
June 11, 2016

Science
Since this is not my area of expertise, I searched Google under the key words "Aldosterone effect on urine" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Aldosterone+effect+on+urine&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
June 11, 2016

math
Mean = ∑x/n (80+85+82+x)/4 ≥ 85 Solve for x.
June 11, 2016

Math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. (a+b)^2 = a^2 + 2ab + b^2
June 11, 2016

algebra
How would you like us to help you?
June 9, 2016

math
12:14
June 9, 2016

Math Makes Sense Grade 3
1 - 1/4 = ?
June 8, 2016

Math (?)
No diagram. Cannot copy and paste here.
June 8, 2016

math
Nearest foot is 2.
June 8, 2016

Business Mathematics
How many tolls have to be paid? Assuming one toll: y = $2 + .80r Substitute 17 for r and solve.
June 7, 2016

MATH
Let x = total distance x - 1/3x - 2/5x = 1,200m Solve for x.
June 7, 2016

Advanced Algebra
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 (SD) Consider only positive value.
June 6, 2016

English
3 and 7 are incorrect.
June 6, 2016

algebra
Cannot draw graphs on these posts. b. 8 *.85 = ? c. 8 * 1.20 = ? d. compare 4.00/.85 to 4.00/1,20
June 6, 2016

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(3) = (5/12)^3 P(1of3) = (5/12)(7/12)^2 e) At least one = one, two or three Either-or probabilities are found by adding the ...
June 6, 2016

Math
Either-or probabilities are found by adding the individual probabilities. P(A or B)= P(A) + P(B) = .03 + P(B) = .07 P(B) = .04 Typos?
June 5, 2016

math
10 liters = 1 cubic centimeter 80*60*50 = ? cubic centimenters
June 5, 2016

maths
Since this is not my area of expertise, I searched Google under the key words "How to draw functions in same set of axes" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+to+draw+functions+in+same+set+of+axes&ie=UTF-8&oe=UTF-8&...
June 5, 2016

MATH (?)
First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. Between the chord and what?
June 5, 2016

science (?)
Lack data.
June 4, 2016

statistics
Z = (score-mean)/SD Use the Z table.
June 3, 2016

Algebra
Why do YOU think this? Might it be helpful in your later life?
June 3, 2016

math
The current value is $200. The cumulative value = $200 * 15 * 12
June 3, 2016

Science
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 4MV = 4*MV
June 3, 2016

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