Wednesday
May 4, 2016

Posts by PsyDAG

Total # Posts: 21,639

Math
Was the "percent of fat calories that a person in America consumes each day" determined by this sample? If so, this sample is too small to generalize to the population. If not, I would assume that the data was found with a larger sample and apply the normal ...
November 20, 2015

science
What are your choices? Habit?
November 20, 2015

Statistics
Unclear. Typo? Z = .12/2 = .06? Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.06) and its Z score.
November 20, 2015

Chemistry?
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. What is your question?
November 20, 2015

Behavioral Statistics Help!
How would you respond, if a bonus was taken away? Using "the same subjects tested in both situations" would lead this to happen.
November 20, 2015

Statistics
In the patient's mind, the placebo reduces anxiety (and therefore some of the stress). This reduction can decrease the perceived pain. http://drdavespsychologypage.homestead.com/Placebo_Power.pdf http://drdavespsychologypage.homestead.com/Placebo_Power_Doubled.pdf
November 20, 2015

algebra
https://www.google.com/search?client=safari&rls=en&q=cumulative+frequency+table&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 19, 2015

Math
A square has all sides equal.
November 19, 2015

math
Distance = rate times time 10 = 65t 10 = 50t Solve for t, convert to minutes and compare.
November 19, 2015

Stats
No table. You cannot copy and paste here.
November 19, 2015

math
What is the "same" exchange rate?
November 19, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "evolution evidence" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=evolution+evidence&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=6WJPVqyVB-aD8QfPwbWgDA In the ...
November 19, 2015

science
Density = mass/volume
November 19, 2015

Statistics
A) small sample. What experiment? B) If that is the first quartile, then 25% would consume 34.31 fat calories or less. Consumption ≤ 34.51
November 19, 2015

Algebra
When multiplying, exponents are added. 1. x^2/9 2. 16a^4/c^8
November 19, 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.
November 19, 2015

scale factors
3.5/1 = x/20 Solve for x.
November 19, 2015

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 Need value of SD.
November 19, 2015

Science
What solution?
November 18, 2015

4th grade math
How many 1/2 dozen and/or 1 dozen batches did she sell. For example: 6 half-dozen = $30 - $10 = $20 profit. 3 dozon = ? 2 half-dozen and 2 dozen = ? etcetera
November 18, 2015

math
b - .7b = Sale price
November 18, 2015

Math
It helps to indicate each answer WITH the question e.g., ***. 1. yes 2. No 3. No 4. Yes 5. Typo? 6. Yes 7. Yes 8. No 10. Yes
November 18, 2015

Math
We cannot chose for you.
November 18, 2015

math
It would help if you proofread your questions before you posted them. Typo?
November 18, 2015

Math
What rectangles? Cannot copy and paste here.
November 17, 2015

Pre Algebra Math
To check answers, we need to know what the problems are.
November 17, 2015

Algebra(Please Help ASAP)
Let x = tree height x/8 = 6/4 Solve for x.
November 17, 2015

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 17, 2015

Business
With data so spread out, it is essentially impossible to evaluate.
November 17, 2015

biology
Since this is not my area of expertise, I searched Google under the key words "purines in DNA" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=purines+in+DNA&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information ...
November 17, 2015

maths
1000km/2cm = xkm/2.5cm Solve for x.
November 16, 2015

maths
2/5 = x/15 20 - x = ?
November 16, 2015

Southwark
52 > 36
November 16, 2015

Math
B = 2S B - 600 = P B + P + S = 6900 2S + (B-600) + S = 6900 2S + (2S-600) +S = 6900 Solve for S.
November 16, 2015

Math
L = 2W + 8 2L + 2W = 100
November 16, 2015

algebra
It would help if you proofread your questions before you posted them. What quadratic function?
November 16, 2015

Math
http://www.celsius.co.uk/converter/
November 16, 2015

Psychology
The photoreceptor would sense brightness, whether rod or cone. However, since the cones work in combination to sense colors, that would not happen. Amount of light = brightness.
November 16, 2015

Science
What questions? We do not have lesson 9. 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.
November 16, 2015

spanish
What are your choices? ellos dan?
November 16, 2015

biology
Since this is not my area of expertise, I searched Google under the key words "history of the discovery of DNA" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=history+of+the+discovery+of+DNA&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
November 16, 2015

math
For whole numbers, 2 and 1. If fractions, it can almost be infinite.
November 16, 2015

Math
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 I'll let you do the ...
November 15, 2015

English
Noun
November 15, 2015

college math
3/5 = x/2000 Solve for x.
November 15, 2015

statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/49 * 1/48 * 1/47 * 1/46 * 1/45 * 1/44 = ? There is an equation for this, but I don't remember it.
November 15, 2015

Math 6th grade
Verbal presentation is presentation with words (e.g., two thousand fourteen).
November 15, 2015

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 15, 2015

math
Let x = John's age (x-4)/2 = (x+5)/3 Solve for x.
November 15, 2015

Algebra
21.25
November 15, 2015

math
3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 39-42 pages
November 15, 2015

Biology
Stable environment where?
November 14, 2015

Biology
Other organisms produce them.
November 14, 2015

Math
M = F - 3 M = 4W Substitute F-3 for M and solve.
November 14, 2015

math
What original function?
November 14, 2015

Biology
a. How can it be dominant, if there are carriers who do not have the disease? b. No, use Punnett Square: https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 13, 2015

Biology
a. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl b. Note that the male Y-chromosome does not have a normal clotting gene to dominate the recessive h gene on the X, so males cannot be just carriers. If they have one h gene, ...
November 13, 2015

math
A square would get the maximum area. (720/3)^2 = ?
November 13, 2015

Biology 30
a. Child would receive either A or B from mom, so could never have type O blood. There is no indication whether the parents are + or -. b. Do punnett square: https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 13, 2015

Statistics
Ho: error1 = error2 Ha: error1 ≠ error2 Ho: new = old Ha: new > old
November 13, 2015

Science
Agree.
November 13, 2015

Statistics Help!
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.
November 12, 2015

science
A, B (disadvantage for the bacteria)
November 12, 2015

science
Varying sieves?
November 12, 2015

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 (.758) and its Z score. Insert data into equation above to calculate score.
November 12, 2015

math
Pythagorean theorem a^2 + b^2 = c^2 (hypotenuse)
November 12, 2015

math
None. You cannot copy and paste here.
November 12, 2015

english
Since this is not my area of expertise, I searched Google under the key words "suddenly" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=suddenly&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=cMZEVo_kNOWD8QfHxYzYBg In the future, you can find ...
November 12, 2015

Statistics Help Please!
If P = .01, then directional would look for P = .01. If nondirectional, you would look for P = .005 in either direction.
November 12, 2015

science
Since this is not my area of expertise, I searched Google under the key words "pftba" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=pftba&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more ...
November 11, 2015

math (?)
It would help if you proofread your questions before you posted them.
November 11, 2015

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 "...
November 11, 2015

MLA citation
https://www.google.com/search?client=safari&rls=en&q=mla+format&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 11, 2015

Paleontology needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Also it makes it much easier for us to respond, if the answers are listed with each question (e.g., *). 13 &14 are right.
November 11, 2015

Math
b + 5 9/8 = 5 6/8 Subtract 5 9/8 from both sides.
November 11, 2015

Algebra Math
Welcome.
November 11, 2015

Algebra Math
L = 3W +2 2L + 2W = 116 Substitute 3W+2 for L in the second equation and solve for W. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
November 11, 2015

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 11, 2015

math
Could designate in gallons (above), quarts, and scientific notation.
November 11, 2015

Statistical Math (?)
More data needed. Also, what do B, P and R signify?
November 11, 2015

math
You need to post the problem.
November 11, 2015

maths
1. 1 litre = 1000 ml 2. 2.199, 2.2, 2.22 3. 20 - 2x = 1 Solve for x.
November 11, 2015

statistic concept application
Lacking data. Mean? Standard Deviation?
November 11, 2015

English
It could be either, but I would bet on the Park.
November 10, 2015

science help ASAP
Agree with first but not second.
November 10, 2015

science help
Disagree. Fighting is cooperative?
November 10, 2015

Math lacking data
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. It would help if you proofread your questions before you posted them.
November 10, 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.
November 10, 2015

math
36/4 = ?
November 10, 2015

Statistic
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)/SEm SEm...
November 9, 2015

math
Since he always has the dollar bill, the problem then goes to how many ways can he make $.75 out of quarters and dimes. If both have to be used, it would only be 5 dimes and one quarter — one way. However, it could also be done with 3 quarters alone, giving you two ways. ...
November 9, 2015

math -4th grade
Agree with your answers.
November 9, 2015

4th grade 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.
November 9, 2015

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 9, 2015

Psychology
Haven't noticed Ms Sue haters, but even so, your post is unnecessary in inappropriate.
November 9, 2015

Math
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. Also, it would help if you proofread your questions before you posted them. Data is missing.
November 9, 2015

Math
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.
November 9, 2015

Statistics
a) For the population, what about the residents who are not listed in the phone book?
November 9, 2015

Spanish
¡Que bueno!
November 9, 2015

Spanish
¡verdad!
November 9, 2015

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