Sunday
November 23, 2014

Posts by PsyDAG


Total # Posts: 18,718

statistics
Z = (score-mean)/SD Either use the handout or 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.
February 26, 2014

Mathematic
1000
February 26, 2014

math
4(6+2) - 6 = 26
February 26, 2014

Science (?)
Missing needed data. Cannot copy and paste here.
February 25, 2014

algebra
2L + 2W < 330 L < 90 180 + 2W < 330 2W < 150 W < 75
February 25, 2014

math (?)
What do c and d signify?
February 25, 2014

math
7.5 mm
February 25, 2014

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. .06x = 9.33 x = 9.33/06 = 155.50
February 25, 2014

Math
5 + .04t < 2 + .10t 3 < .06t t > 3/.06 = 50
February 25, 2014

MATH (?)
How many of each color are in a package?
February 25, 2014

math
(2.50-1.75)M - 40 = 550 .75M = 590 M = 590/.75
February 25, 2014

Algebra Readiness
The previous post is for the square cake. Need more data for the "heart cake."
February 25, 2014

Algebra Readiness
L = W = 8 2W + 2L = Perimeter W * L = area
February 25, 2014

behavioral statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities to compare their Z scores (the most common type of standard score).
February 25, 2014

Math
(2*6+3)^2 > 175 15^2 > 175 225 > 175
February 25, 2014

Statistics
Don't have a TI-84 calculator, but.... 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 (.80) related to a Z score. Insert that value into the above ...
February 25, 2014

math
2 1/3x = 7/3x = 15 x = 6.43 .43 * 7/3 = ?
February 25, 2014

math
5x = beads in necklace 5x + x = 192 Solve for x, then 5x.
February 25, 2014

math
14 - 9 = ?
February 25, 2014

probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.4)(1-.8)(1-.6) = ?
February 25, 2014

Statistics
It is 99%, sorry for the typo.
February 25, 2014

Statistics
95% = mean ± 2.575 SEm SEm = SD/√n I'll let you do the calculations.
February 25, 2014

Science Please HELP!!!
X-chromsome Now are you reedy for the real thing rather than just practice?
February 24, 2014

Genetics
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 your later post.
February 24, 2014

ela
Google each term. 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/.
February 24, 2014

business communication (?)
Do you have alternatives to choose from? You cannot copy and paste here. Having typos (as you have in your subject listing) indicates lack of attention to detail.
February 24, 2014

math
19/5 = x/1.5 Solve for x.
February 24, 2014

math
9.5/2 = x/14 Solve for x.
February 24, 2014

Math
6'4" = 76" 1" = 2.54 cm 76" * 2.54 = ?
February 24, 2014

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. However, I searched Google under the key words "power assertion psychology" to get...
February 24, 2014

vocab (?)
It would help if you included the context for these terms.
February 24, 2014

Science
How could you throw a ball, "if inertia didn’t exist?"
February 24, 2014

psy220
Not knowing what your question is, I searched Google under the key words "American pursuit of happiness" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=American+pusuit+of+happiness&ie=UTF-8&oe=UTF-8#q=American%20pursuit%20of%...
February 24, 2014

AP style (?)
What is the context? For example, if it is North Central College, it would not be hyphenated.
February 23, 2014

Statistics (?)
What blanks? Z = (score-mean)/SD T = 50 + 10Z
February 23, 2014

statistics
95% = mean ± 2 SD 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 ...
February 23, 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 your later post.
February 23, 2014

math (?)
We cannot see your diagram, and you cannot copy and paste it. https://www.google.com/search?client=safari&rls=en&q=right+acute+and+obtuse+angles&ie=UTF-8&oe=UTF-8
February 23, 2014

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/3 * 1/3 = ?
February 23, 2014

Statistics
Either-or probabilities are found by adding the individual probabilities. Since three face cards are already spades, delete them for the face card probability. 9/52 + 13/52 = ?
February 22, 2014

Probability
Right!
February 22, 2014

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. See your later post.
February 22, 2014

rutgers
With your data, you don't, unless you meant ∑(mean-x)^2 = 238 You have to 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 ...
February 22, 2014

math
33.60/4 *1000 = ?
February 22, 2014

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 "...
February 22, 2014

A Peculiar Question
It is a learned method of relating to others. If it inconsistent over situations and persons, it can be considered an aspect of one's personality. However, whatever is learned can be unlearned… assuming that the person wants to unlearn it.
February 21, 2014

Algebra 1
The latter. Exponents are added when multiplying terms.
February 21, 2014

math
(11,000-8690)/11,000 = ?
February 21, 2014

Bio 20
Although this is not my major area of expertise, I would say D. For the same volume of water, a thin hose has more pressure than a larger one.
February 21, 2014

Science
Since this is not my area of expertise, I searched Google under the key words "brain lobes fetal pig" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=brain+lobes+fetal+pig&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
February 21, 2014

statistics
µ = 30 Variance for distribution of means = (SD/√n)^2 = ?
February 20, 2014

Science
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 your later post.
February 20, 2014

math
I assume you mean 3/8 = 7/(x+1). Multiply both sides by x+1. 3/8x + 3/8 = 7 Subtract 3/8 from both sides. 3/8x = 6 5/8 = 53/8 Multiply both sides by 8/3. x = 53/8 * 8/3 = ?
February 20, 2014

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1. .2 * (1-.3) = ? Either-or probabilities are found by adding the individual probabilities. 2. (.2 *3.) + (.8 *.3) = ?
February 20, 2014

Science
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 your last post.
February 20, 2014

Science
I agree.
February 20, 2014

algebra
Ah, better! l2xl > 16 x > ± 8
February 20, 2014

algebra
It would help if you proofread your questions before you posted them. There is no inequality given. An inequality requires either a < or > symbol.
February 20, 2014

maths
It would help if you proofread your questions before you posted them. Hard to know if the space denotes a comma or period or something else. 55,010 - 899 = 54, 111
February 20, 2014

STATS
To make a prediction, it doesn't matter which variable is measured on the abscissa.
February 20, 2014

Biology
Is SW USA a polar Region? I live in the SW… A.
February 20, 2014

BIOLOGY
Availability of food and vulnerability to predators. Natural mutations might make changes in phenotypes that help in dealing with the two factors above. Those would then tend to reproduce.
February 19, 2014

Middle School Math Help Please
Juice started out as a whole glass (1). Water = 1/6 + 1/3 + 1/2 = ?
February 19, 2014

Algebra
w = 30 - y 9.95w + 13.50y = 337.55 Substitute 30-y for w in second equation and solve for y. Insert that value into the first equation and solve for w. Check by inserting both values into the second equation.
February 19, 2014

Math
Subtract one equation from the other to eliminate the y. 11x = -11 Solve for x then y.
February 19, 2014

algebra
I don't understand why 100x is negative. Wouldn't commission for sales be positive? If he sells no computers, x = 0.
February 19, 2014

Statistics
See previous post.
February 19, 2014

Statistics
If you are comparing two means, you need to have the SEm, which requires knowledge of n. You do not supply that value. 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 ...
February 19, 2014

Science
Since this is not my area of expertise, I searched Google under the key words "thymus size fetal pig" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=thymus+size+fetal+pig&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
February 19, 2014

Socials
Since this is not my area of expertise, I searched Google under the key words "Kamloops biome" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Kamloops+biome&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
February 18, 2014

Math
each set? With replacement, the probability for red remains 6/15 = 2/5 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
February 18, 2014

Statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .8 * (1-.6) = .32
February 18, 2014

Statistics (?)
More data is needed for us to provide help.
February 18, 2014

stastistics
http://en.wikipedia.org/wiki/Student's_t-test
February 18, 2014

algebra (?)
No answers followed. Cannot copy and paste here.
February 18, 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. If the events are independent, the probability of both/all events occurring is ...
February 18, 2014

statistics
Expect the µ's to stay the same. The standard error of the mean (SEm) = SD/√n SEm would tend to get smaller as n increases.
February 18, 2014

Algebra 1
f = 2s + 6 s + f = 24 Substitute 2s+6 for s in second equation and solve for s. Insert that value into the first equation and solve for f. Check by inserting both values into the second equation.
February 17, 2014

Math
We cannot draw on these posts.
February 17, 2014

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 17, 2014

science
Also, please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you.
February 17, 2014

Science
I agree.
February 17, 2014

stats (?)
since you cannot copy and paste, we do not have the ANOVA. Even if we did, what is you question?
February 17, 2014

Math
Multiply top equation by 3 and then add the equations. 3x + 6y = 15 -3x + 6y = 15 12y = 30 You can take it from this point.
February 17, 2014

math (second Anon.)
First, if you are a different anonymous and 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. Second, we do not do your homework for you. ...
February 17, 2014

math (first Anon.) (?)
Choices not given. You cannot copy and paste here.
February 17, 2014

math
Since this is not my area of expertise, I searched Google under the key words "business math to evaluate investments" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=business+math+to+evaluate+investments&ie=UTF-8&oe=UTF-8 In the ...
February 17, 2014

biology
Since this is not my area of expertise, I searched Google under the key words "hypertonic" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=hypertonic&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more ...
February 17, 2014

biology
See your later post.
February 16, 2014

math (?)
You have two unknowns. Without more data, it cannot be solved.
February 16, 2014

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 16, 2014

maths (?)
Again you are unclear. Are you choosing from the selected cards or the remainder of the deck? If of the 7 cards removed, red card is 2/7. neither king nor queen = 5/7 I'll let you do the rest.
February 16, 2014

maths
I'm not sure what "it" refers to. As long as the choice is random, there are 15 odd cards of the 30. 15/30 = ?
February 16, 2014

Statistics
Sampling with replacement puts the chosen unit back in the pool, while without replacement does not. Probabilities remain the same with replacement, but both numerator and denominator are reduced by one in without replacement in subsequent choices.
February 16, 2014

Math
3s + 4j = 360 s + 3j = 220 Multiply second equation by 3, then subtract first from second. 3s + 9j = 660 5j = 300 Solve for j, then insert that value into either equation to find s.
February 16, 2014

Ethics
Intrinsic goods are valued in themselves rather than leading to some other goods. http://www.diffen.com/difference/Ethics_vs_Morals
February 14, 2014

Math
1.3-2.5x ≤ -1.2x-0.52 Add .52 and 2.5x to both sides. 1.3 + .52 ≤ -1.2x + 2.5x 1.82 ≤ 1.3x Divide both sides by 1.3. 1.4 ≤ x or x ≥ .14
February 14, 2014

Statistics
Why are you substituting 5 for =? 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 (.025 because it is two-tailed) and its Z score. Insert Z first as ...
February 14, 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. https://www.google.com/search?client=safari&rls=en&q=appropriate+outlet+box&ie=UTF-8&oe=UTF-8
February 13, 2014

Math 7
Cannot be solved unless you have some indication of relation of A or b to the height (20). A = 10b
February 13, 2014

Pages: <<Prev | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | Next>>

Search
Members