Monday
February 8, 2016

# Posts by PsyDAG

Total # Posts: 21,149

stats
95% = 490 ± (490-260)
July 25, 2015

math
Multiply numerator and denominator by same number, e.g., 12/22, etcetera.
July 22, 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.
July 22, 2015

Probability
(1-.12) * .08 = ?
July 21, 2015

Science
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. More data needed.
July 21, 2015

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 related to the Z score.
July 20, 2015

Statistics
Use same process as in you first post, but for ±.025.
July 20, 2015

Statistics
98% = 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 (±.01) and its Z score. Insert data and calculate.
July 20, 2015

math
See Smith's posts.
July 20, 2015

math
8/2 = 4, so it is reduced by a factor of 4. The same would be true for the length.
July 20, 2015

math
See Smith's posts for process.
July 20, 2015

math
Are you Keon or Smith or both? If both, only use one address. See Smith's answers.
July 20, 2015

math
Use same process.
July 20, 2015

math
Move -2.75 to the left side.
July 20, 2015

math
Use process shown in previous post.
July 20, 2015

math
(15 * 20)/2.5 = ?
July 20, 2015

math
1.5 * 4 * 7 = ?
July 20, 2015

maaaath
His cost is 650/250 = 2.6 per apple No idea of his selling price, since I don't know how much his markup is.
July 19, 2015

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 scores. Z = (score-mean)/SEm SEm = SD/√n
July 19, 2015

science
Bake one batch with brown and one with white to compare thinness.
July 19, 2015

science
What is your hypothesis? 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.
July 19, 2015

statisitics
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 the Z score.
July 18, 2015

Math
Let x = starting money x - 2/3x - 2/3(1/3x) = 200 Solve for x.
July 18, 2015

College Algebra II
(a) 50 + 1000 + 2(1500) + 2(8500) + 3000 = ? I am assuming that the patient needed an anesthesiologist. (b) Go through the same process.
July 18, 2015

probability
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Assuming that the pick is either one box or the other "ball," either-or probabilities are found by adding the individual ...
July 16, 2015

Math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Could be any of a multitude of numbers. What are your choices?
July 16, 2015

Math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared.
July 16, 2015

PSYCH
July 16, 2015

PSYCH
I would go with B.
July 16, 2015

Psychology
Typically the "none of above" is the last choice, so it refers to all of the preceding alternatives. In this case, it would only refer to A.
July 15, 2015

Career Choice
In choosing a possible career, it might help to talk to your school counselor, who can ask specific questions to help you to consider choices. S/he can also give you interest tests to suggests careers that might appeal to you.
July 15, 2015

math
(Standard error of sample means) SEm = SD/√n Calculate and compare.
July 15, 2015

percentiles
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Not knowing the distribution of scores, I don't know if your calculations are correct. Unless you have instructions to the contrary, I would round.
July 14, 2015

Career Choices
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. In choosing a possible career, it might help to talk to your school counselor, who can ask specific questions to help you to consider choices...
July 14, 2015

Math
Formula "b  0.01m0.7" is unclear.
July 13, 2015

Psychology
Outside of fatigue, what other environmental factors effect IQ? Were both administrations standardized? What is the reliability of that IQ test? Did the socioeconomic factors improve? https://en.wikipedia.org/wiki/Environment_and_intelligence Don't just copy the material. ...
July 13, 2015

Math
First of all, 150 + 50 + 30 ≠ 250 With that: 1) 50/250 = ? 2) 1 - 30/250 = ?
July 12, 2015

Psychology
A UR is in response to a US, while a CR is in response to a CS. They can both be the same, but may differ in magnitude.
July 12, 2015

Psychology 20 (HELP)
Traits that can be modified with training are due to nurture, those that cannot are do to nature. However, environmental factors can effect the phenotypical traits that are typically determined by genetics (nature), e.g, diet.
July 12, 2015

math
July 12, 2015

Psychology 20 (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. See your later post.
July 12, 2015

ethical DILEMMA
Google each of the philosophers names along with "views on violent resistance."
July 12, 2015

statistics
1. 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. 2. Z = (score-mean)/SEm SEm = SD/√n Use same table.
July 11, 2015

prob & stat
No Picture
July 11, 2015

english
What are you doing (or plan to do) during your summer vacation?
July 10, 2015

statistics
SEm = SD/√n Do the math.
July 9, 2015

Statistics
Way off. Probability = ticketed drivers/total = 298/527 = ? 1/527 = P(a particular driver was stopped) 1/298 = P(a particular driver was ticketed)
July 9, 2015

math
What statements?
July 8, 2015

math
Since this is not my area of expertise, I searched Google under the key words "algebraic verification of 4 sectors of the circle" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=algebraic+verification+of+4+sectors+of+the+circle&ie=...
July 8, 2015

statistics
What determines bonuses? Z = (score-mean)/SD If Z = +1.00 does: 1 = (score - 8500)/1500 Solve for score.
July 7, 2015

statistics
July 7, 2015

science
Since this is not my area of expertise, I searched Google under the key words "speed of water evaporation" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=speed+of+water+evaporation&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...
July 7, 2015

Psychology
An attitude is much more consistent than a "passing thought." Typically it determines your behavior.
July 6, 2015

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

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
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
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

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

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