Thursday
December 18, 2014

Posts by PsyDAG


Total # Posts: 18,863

biology
Since the body is about 2/3 water, I would choose the latter.
December 1, 2014

algebra
Cannot draw a diagram on this post.
November 30, 2014

MATH
99% = mean ± 2.575 SEm SEm = SD/√n Find the mean first = sum of scores/number of scores (n) 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...
November 30, 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 your later post. a)
November 30, 2014

STATS MATH 1
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 ± 1.96 SEm SEm = SD/√n
November 30, 2014

Math Stats
95% = mean ± 1.96 SEm SEm = SD/√n 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...
November 30, 2014

Math Stats
I wish you would use the same name all the time. Check under LAGO.
November 30, 2014

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1/25 = 5^-2 When multiplying a particular number, you add the exponents.
November 30, 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 previous post.
November 30, 2014

statistics
a) 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. b) Z = (score-mean)/SEm SEm = SD/√n Use same table.
November 30, 2014

math
11 factorial = 11! = 11 * 10 * 9 … * 3 * 2 * 1 Same process for other factorials.
November 30, 2014

math
27 * 33 * .4 = ?
November 30, 2014

statistics (GWARD4)
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. Z = (score-mean)/SD Find table in the back of your statistics text labeled...
November 30, 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 for ± Z score. Multiply by 100.
November 30, 2014

statistics
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. Multiply by 100.
November 30, 2014

Algebra
If I knew what a "sis" was, I might be able to answer your question. Probability of tails = .5 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. What is the probability...
November 30, 2014

Statistics
a. .20 b. Either-or probabilities are found by adding the individual probabilities. c. 1 - .3 - .1 - .15 - .2 = ?
November 29, 2014

Math
It must be some multiple of 5 between 20 and 30. What could that be?
November 29, 2014

ANATOMY
You could read the text and make your own power point notes, so you could sell them to students taking the course the next semester.
November 29, 2014

Math 032
(7*12 + 9)/22.3 = ?
November 29, 2014

math
What number divides evenly into both 84 and 96?
November 29, 2014

Math
With a ratio of 5:4, the total needs to be some multiple of 9. Which is not a multiple of 9?
November 29, 2014

Math
5x + 4x = 27, 54, 60, 72 Solve for x for each number. Which every does not solve as a whole number is the answer.
November 29, 2014

SIXTH GRADE MATH
For a ratio of 2:3, the total must be some multiple of 5. 2x + 3x = 5x
November 29, 2014

SIXTH GRADE MATH
2x + 3x = 7, 14, 25, 26 With which one is x a whole number?
November 29, 2014

Plz help with 8th grade math
4/5 = x/56 To find x, multiply both sides by 56, then divide by 5.
November 28, 2014

biology
pseudopods
November 28, 2014

8th grade math question..
2.5 dozen = 28 .25/28 = x/90 To find x, multiply both sides by 90 and then divide by 28.
November 27, 2014

Biology
Use a Punnett square. Dad is bb and mom is BB. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 26, 2014

science
Since this is not my area of expertise, I searched Google under the key words "genetic mutations phenotype" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=genetic+mutations+phenotype&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
November 25, 2014

Math
80 + 6x = 145 - 7x Solve for x.
November 25, 2014

SCIENCE BUT I REALLY NEED HELP
Chromosomes mate, reproduce
November 25, 2014

Math Help! ASAP!
It needs to have the numbers 1 and 3.
November 25, 2014

math
Multiply the numbers and add the exponents, then simplify.
November 25, 2014

statistics
Ho: mean = 2 Ha: mean < 2 Once you get UTeM data, insert. 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 ...
November 25, 2014

Neuroscience
3. In future posts, indicate the answers you think are correct.
November 25, 2014

Neuroscience
3.
November 25, 2014

Neuroscience
1.
November 25, 2014

Biology (?)
What three organs?
November 25, 2014

Astronomy
"Twinkle, twinkle little star," but that is unlikely with planets. Also planets rotate in contrast to stars.
November 24, 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.
November 24, 2014

statistics
You cannot copy and paste here.
November 24, 2014

Health And Physical Ed
I would say: false Peristalsis kidneys fiber
November 23, 2014

Science PLEASE HELP
Since this is not my area of expertise, I searched Google under the key words "Exothermic Endothermic reactions" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Exothermic+Endothermic+reactions&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
November 23, 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.
November 23, 2014

Stats
What is your question? (175-14)/175 = proportion who do not think that dorm food is bad, which is not necessarily the same as saying it is good.
November 23, 2014

statistics
a) 120 * 60 = ? b) Standard Error of the mean (SEm) = SD√n
November 23, 2014

Statistics
I thought I answered this previously. a-c. 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 of each Z score. Multiply by 100. d, e. Find table in the back of...
November 23, 2014

statistics
Is anyone manipulating a variable? a. All students buying textbooks b. Textbooks purchased c. 100 students
November 22, 2014

science
Good for you!
November 22, 2014

Stats
It is a Type I error.
November 22, 2014

statistics
Z = (score-mean)/SD If the camera is set at 10% above speed limit = 88 km/h. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability in the larger portion related to the Z score. ...
November 22, 2014

Science
What are you measuring?
November 22, 2014

Science
± .05 sounds plausible for .1 gram, but I don't know about the accuracy of an electronic balance.
November 22, 2014

statistics
The measure of variability for distribution of means = SEm = SD/√n Note that as n increases, SEm decreases. Larger samples (n) are less likely to be biased one way or the other.
November 22, 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.
November 22, 2014

Statistics (Janelle)
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. Second, we do not have the "data in question 25."
November 21, 2014

Loneliness
I compare direct interpersonal relationship and Facebook to the analogy of sugar vs. saccharine, respectively. Both can give us an immediate sweet taste, but only sugar leads to nourishment. With direct personal interaction, not only do you have verbal interaction, but also a ...
November 21, 2014

science
sensory neurons,interneurons in brain, motor neurons You have to sense something before you can respond to it.
November 21, 2014

Living a Healthy Life
C, hemoglobin is the oxygen-carrying portion of red blood cells.
November 21, 2014

Living a Healthy Life
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.
November 21, 2014

statistics
The larger the confidence interval, the greater your confidence level that it contains the true value.
November 20, 2014

English
Overall, how the delivery was characterized, and how he used the presentational aids, made me understand how to present a speech. A strength that the speaker had in his speech was the tone of voice and his gestures. An improvement that the speaker could make is not to be ...
November 20, 2014

biology
food?
November 20, 2014

Pre Algebra
An hour is 2 times 1/2 hour, therefore the speed in miles per hour = 4.4 * 2 = ? miles per hour
November 20, 2014

Business statistics
Accept Ho, when Ho is wrong.
November 20, 2014

5 grade
Think of common table salt (NaCl), which is made up of Na (Sodium) and Cl (chlorine). Look up the properties of the three.
November 20, 2014

5th grade 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. Also, please use the same name on all your posts.
November 20, 2014

Science help URGENT
I would go with the first choice.
November 20, 2014

Foundation of a Healthy Lifestyle
Since she also changes the way she throws the ball, I would choose C.
November 20, 2014

Stastic=tics
Assuming an 8-hour day and each of the coders does 3/hour, currently: 2 * 3 * 8 = 48 In relation to the desired increase: 75 - 48 = 27
November 20, 2014

Math
4 * 5 = 20, add two zeros.
November 20, 2014

Psychology Statistics
Means not given.
November 20, 2014

Parents, Finances, and School-Age Children
Agree.
November 20, 2014

no diagram
You cannot copy and paste here.
November 20, 2014

Algebra
s = 4000 - n 3s + 5n = 15,000 Substitute 4000-n for s. 3(4000-n) + 5n = 15,000 Solve for n, then s.
November 19, 2014

Math
Multiply both sides by x. 1 = x^2, therefore x = 1 Cannot represent graphically on this post.
November 19, 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.
November 19, 2014

child developement
Do you have children those ages to compare?
November 19, 2014

math
9 dozen costs 9 times as much as 1 dozen, unless there is a special sale for more than a dozen muffins.
November 19, 2014

Math
It fits for p = 0, but not p = 1.
November 18, 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.
November 18, 2014

math
11 + .12m = 27 + .07m Solve for m.
November 18, 2014

algebra
30 + .19m ≤ 87 Solve for m.
November 18, 2014

math
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 (.30) from the mean and its Z score. Enter ±Z and other data into the equation above to get the scores.
November 18, 2014

math
4n + 2.5n = 39 Solve for n.
November 17, 2014

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.
November 17, 2014

Math
24/3 = 8 per person
November 17, 2014

math
Cannot draw a Venn diagram on this post.
November 17, 2014

math
3750 - 3(225) - 2(1200) = ? gm
November 17, 2014

Science
nephron, ureter, urinary bladder, urethra
November 17, 2014

Maths
They all check, but it would be better (as least for me) to have a space between the equal sign and the negative sign, so they would be easier to see. Thanks.
November 17, 2014

biology
if both parents are normal, then they must be heterozygous for the cystic fibrosis allele. Use a Punnett Square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 17, 2014

statistics
Cost will be (4*1500) + (12*120) = ?
November 16, 2014

statistics
100 + 3(50) = ?
November 16, 2014

statistics (?)
We do not have the senario above.
November 16, 2014

Statistics
15 minutes = 1/4 hour 1424/4 = ?
November 16, 2014

statistics
I am assuming that you have phrased the question correctly. If "you received 5,352 requests for records within a six-month period,… the request rate for the past six months" = 5,352 per 6 months.
November 16, 2014

Science-DNA
3' and 5' symbolize 3 feet and 5 feet.
November 16, 2014

math/fractiom
I assume that "1 2" is 1/2. 1 - 1/5 - 1/2 = 1 - 2/10 - 5/10 = ?
November 16, 2014

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