Sunday
July 5, 2015

Posts by PsyDAG


Total # Posts: 20,004

science
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 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 ...
July 4, 2015

maths lit,BS and geography
There are many jobs that you might qualify for. I would suggest that you see your school counselor to get more specific information. S/he could also give you interest tests that could tell you how various occupations would fit your interests. I'm not sure what "BS&...
July 3, 2015

health and nurtition
B
July 3, 2015

math
1/36
June 30, 2015

Chem needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
June 30, 2015

statistics
https://www.google.com/search?client=safari&rls=en&q=slope+equation&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 30, 2015

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 30, 2015

algebra
A rectangular closet is three dimensional. It also has depth. Are you just considering the door to the closet? W = L/2 - 1 2W + 2L = 40 Substitute L/2 - 1 for W in the second equation and solve for L. Insert that value into the first equation to solve for W. Check by putting ...
June 30, 2015

Statistics
10. Divide spades by total possible. 11. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(M) = 1/20 * 1/10 (once first person chosen, second must be opposite gender, unless ...
June 30, 2015

statistics
Consider each die separately. The P for die 1 to have a 1 = 1/6 The P for die 2 to have a 1 = 1/6 You want either one or the other of the dice to show a 1. Either-or probabilities are found by adding the individual probabilities.
June 30, 2015

statistics
6. No, either-or probabilities are found by adding the individual probabilities. P = P(1) + P(1) = ? 7. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
June 30, 2015

PSYCH
No. https://www.google.com/search?client=safari&rls=en&q=DSM+5+Axes&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 29, 2015

Maths statistics
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 "...
June 28, 2015

Math
The greatest numeral is 8.
June 28, 2015

stats
The larger the sample, the more likely it will approximate a normal distribution.
June 28, 2015

Geometry
No, a trapezoid has both sides angling inward, while the parallelogram only has one going inward (toward the top).
June 27, 2015

stats
SEm = SD/√n
June 26, 2015

statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (for 95%, use .025) and its Z score. 95% = mean ± Z SEm SEm = SD/√n For other intervals, adjust Z score accordingly.
June 26, 2015

Algebra
1000/30 * $4 = A 1000/50 * $4 = B Subtract B from A.
June 25, 2015

intro to psychology
meaning?
June 24, 2015

Biology
Since when is this biology? Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
June 24, 2015

algebra
4x - 5
June 24, 2015

statistics
coefficient of determination = r^2 Therefore correlation coefficient is √r^2.
June 24, 2015

statistics
It is just due to chance variation.
June 23, 2015

biology
What is your hypothesis? Do you have a control group? Are they alive? If alive, they would probably swim around.
June 23, 2015

bio
Since this is not my area of expertise, I searched Google under the key words "what happens when alveoli are destroyed" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+happens+when+alveoli+are+destroyed&ie=UTF-8&oe=UTF-8&...
June 22, 2015

math
Data Missing. What type of figure are you measuring?
June 22, 2015

Algebra
L = 2W + 4 2L + 2W = 30 Substitute 2W+4 for L in second equation and solve for W. Insert that value into the first equation and solve for L. Check by inserting both values into the second equation.
June 22, 2015

Statistics
Z = (score-mean)/SD = (33.88-33.8)/SD SD =√variance
June 20, 2015

statistics
Populations have parameters, but samples have statistics. This is a measure of central tendency.
June 20, 2015

Science
Wherever the tectonic plates meet, they are likely. Does this happen in all countries?
June 19, 2015

intro to psychology
supported by empirical data
June 19, 2015

intro to psychology
hypothesis? Assumption?
June 19, 2015

psychology
I searched Google under the key words "APA informed consent" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=APA+informed+consent&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if ...
June 19, 2015

psychology
A
June 19, 2015

Biology
Disagree
June 19, 2015

PSYCH
https://hardsci.wordpress.com/2012/03/12/some-reflections-on-the-bargh-doyen-elderly-walking-priming-brouhaha/
June 19, 2015

math
Yes.
June 18, 2015

psychology
Historically, it would most likely be C.
June 18, 2015

Statistics
Normal distribution not needed. Can do Chi-square (X^2) test. https://www.google.com/search?client=safari&rls=en&q=chi+square+calculator&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 18, 2015

Statistics
Lacking data. What was the mean and standard deviation of the change in cholesterol levels?
June 18, 2015

psy410
Agree. They can all cause cognitive problems. Google each to verify.
June 18, 2015

appliances
Since this is not my area of expertise, I searched Google under the key words "purpose of the external jumper wire on a variable-speed reversing drill switch" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=purpose+of+the+external+...
June 18, 2015

Statistics
Look at the abscissa (X-axis) for the value of 2.
June 17, 2015

math
Got it!
June 17, 2015

math
If the final = four regular exams: Mean = ∑x/n = ((87*4) + 70 + 92)/6 = ?
June 17, 2015

math
Lacking needed data.
June 17, 2015

psychology
I searched Google under the key words "how depression affects friendships" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=clinical+depression+friendships&ie=UTF-8&oe=UTF-8&gws_rd=ssl#q=how+depression+affects+friendships In the ...
June 17, 2015

Stats
No data given.
June 16, 2015

algebra
What is your question?
June 16, 2015

math
V = w * L + h = 4 * 23 * 7 = 644 Yep!
June 16, 2015

Math
Assuming that it is a square with three matchsticks on each side, matchsticks can be added internally to give nine squares with each side of one matchstick.
June 15, 2015

Math
"ordered pairs"? Total cost = $30x
June 15, 2015

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 ...
June 15, 2015

Statistics
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 = s/√N
June 14, 2015

math
100,000
June 14, 2015

Statistics
Neither. r varies between +1 and -1.
June 13, 2015

Statistics
95% = 148 ± 1.96 (35/30) =148 ± 1.96(1.17) = 148 ± 2.287 = 145.713, 150.287 Is that what you calculated?
June 12, 2015

math
Typos. If you draw 12, how would you get "5 out of 10" any color?
June 12, 2015

STATS
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/56 * 1/(56-1) * 1/59 = ?
June 12, 2015

Statistics
Use correlation coefficient. https://www.google.com/search?client=safari&rls=en&q=correlation+coefficient&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 12, 2015

Statistics
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. 3 = Z (s/√n) = 2.575 (15.8/√n) Solve for n.
June 12, 2015

Statistics
Agree.
June 11, 2015

Statistics
1
June 11, 2015

Math (Finite)
Lacking data. What is the makeup of the group they are selected from?
June 11, 2015

Math (Finite)
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 10^5 = ?
June 11, 2015

Biology
Use Pennett square for father (pp) and mother (Np). https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 11, 2015

Math
What parts?
June 11, 2015

Stats
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 related to the Z score.
June 11, 2015

Stats
See later post.
June 11, 2015

Biology
Use Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 9, 2015

statistics
P = 100!/(2!)(100-2)! = 100!/(2)(98!) = 100*99/2 = 9900/2 = ?
June 9, 2015

statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
June 8, 2015

Stats
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 between the two Z scores.
June 7, 2015

Algebra
Welcome
June 7, 2015

Algebra
The answers you have chosen are right. For unanswered problem, .018 * 800 = ?
June 7, 2015

math
V = π r^2 * h = π (8/2)^2 * 8 = π * 16 * 8 = ?
June 6, 2015

math
P = n!/r!(n-r)! = 7!/5!(7-5)! = (7*6)/2 = ?
June 6, 2015

math
V = π r^2 h = π (14/2)^2 * 20 = π 49 * 20 = 980 π 980 π = π (10)^2 * h 980 = 100h Solve for h.
June 6, 2015

Math
32/(18+30+32) = ?
June 6, 2015

Stats
No numerical data.
June 5, 2015

Bio
Changes
June 4, 2015

HELP!! 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 Z = (mean1 - mean2)/...
June 3, 2015

Algebra 1
Z = (score-mean)/SD
June 3, 2015

Algebra
Z = (score-mean)/SD
June 3, 2015

Psychology
A
June 2, 2015

Algebra 1
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/5 * 2/3 = probability they are chosen for speaking roles. Subtract from 1 to get chorus probability.
June 2, 2015

math algabra
W = 2L W * L = 162 2L * L = 162 Solve for L then W.
June 2, 2015

STATISTICS
Lacking Data.
June 2, 2015

Math
Welcome
June 1, 2015

Math
f(x) = .5(2x) = .5(2*2) = .5(4) = 2
June 1, 2015

health
However, they can be reduced or eliminated, if the person seeks therapy from a qualified psychotherapist. https://www.google.com/search?client=safari&rls=en&q=treating+anxiety+disorders&ie=UTF-8&oe=UTF-8&gws_rd=ssl
June 1, 2015

health
However, they can be reduced or eliminated, if the person seeks therapy from a qualified psychotherapist.
June 1, 2015

Math (Statistics)
Data lacking. Without knowing population mean, standard deviation and sample size, it is impossible to know. 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 ...
May 31, 2015

Algebra 1
I saw 130, which minus 4 = 126.
May 31, 2015

Algebra 1
In contrast to Reiny, I factor to get (2x+18)(x-7) = 0 Since the distance cannot be negative: x = 7 x + 2 = 9
May 31, 2015

Algebra 1
Factor to solve for x, which cannot be negative. 126 = 3 * 2 * 7 * 3 = 18 * -7 Work it from there.
May 31, 2015

Statistics
Welcome!
May 30, 2015

Statistics
.1 + .1 + .2 = .4
May 30, 2015

Math, help plz
Data lacking. Whichever has the smallest frequency.
May 30, 2015

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