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Posts by PsyDAG

Total # Posts: 23,461

Forensic Psychologist
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.

Statistics
What is the value of the sample mean? 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 ...

Statistics
To calculate it yourself: 95% = 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 (±.025) and its Z score. Insert data into above ...

Statistics
Question incomplete. Need to be more specific.

Math
.75π * .2π = .15π^2

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

Math
What is your question?

Math (?)
Lacking adequate data.

MATH
6/8 > 2/4 > 1/4

Math
1.0825 * $88 = $?

Math
cot@/cot@ = 1 tan@/tan@ = 1

Math (?)
What is your question?

math
Impossible. An integer is one numeral (8, 9, 4, etc.). Max sum of two consecutive integers (8+9) = 17. Typos?

maths
(17-x)(14-x) = 108 Solve for x.

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 (.1003) and its Z score. Insert data into equation above.

Geometry
Would you ever try to plan any building without relying on geometry? How about surveying? That is just a start.

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

Maths
Area = length * width = 6.1*8.1 = ?

statistics
No data. Cannot copy and paste here. However, I will give you a start. Ho: mean1 = Mean2 Ha: mean1 ≠ mean2

Drivers ED
Welcome

Drivers ED
agree.

Math
It would help if you proofread your questions before you posted them. From your data, he spent 1/4 on books. Typos?

Pre-Algebra
Do you have any choices? rotated, similar, positions, total?

Drivers ED
agree. http://dor.mo.gov/pdf/Chapter3.pdf

english
It would help if you proofread your questions before you posted them. "Vancouver, Canada" is a complete subject. "vancouver canda is in british columbia" is a complete sentence.

Health And Physical Education
It would help if you proofread your questions before you posted them. Uncomfortable what? "one BBBB"? The only defense mechanism is a.

Algebra
We cannot draw a diagram on these posts. However, the maximum are would be closest to a square.

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 each Z score. For C, use P(±.40) to find Z and insert into equation above.

maths
It would help if you proofread your questions before you posted them. # black balls/ total balls

Health!
Since this is not my area of expertise, I searched Google under the key words "saddle joint motion" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=saddle+joint+motion&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...

algebra
mean = ∑x/n 93 = (95+92+98+76+100+x)/6 Solve for x. x ≥ ?

Math
g = 52 - c 2c + 4g = 128 Substitute 52-c for g in the second equation and solve for c. Insert that value into the first equation to solve for g. Check by putting both values into the second equation.

Health
I disagree. You are doing this to "maintain my #1 seed on the tennis team."

math please help
450 + .07s ≥ 681 + .04s Solve for s.

Math
adult size = 5.5 * 15/.75 = ? Child size = 5.5 * 15/.5 = ?

Math
7 * 4 = 28 ft^2 Each plant requires 1 ft^2. What does that tell you?

psychology (?)
What choices? You cannot copy and paste here.

Science
Which weighs more?

Statistics
"at least 4" = 4, 5, or 6. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Online, “*” is used to indicate multiplication to avoid confusion with “x&#...

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. I'll let you do the calculations.

Biology
Since this is not my area of expertise, I searched Google under the key words "man made allopolyploid cereal crop" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=man+made+allopolyploid+cereal+crop&ie=UTF-8&oe=UTF-8&gws_rd=ssl In ...

statics
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, here is a start. If the events are independent, the probability of both/all events ...

maths
M = Et - 5 Er = 2Et Er + Et + M = 47 Substitute Et-5 for M and 2Et for Er in the third equation and solve for Et. Insert that value into the other equations to solve for M and Er. Check by putting all values into the third equation.

Math (?)
Lack data. Also cannot graph on these posts.

Math
Since this is not my area of expertise, I searched Google under the key words "what does skip half an increment mean in graphs" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+does+skip+half+an+increment+mean+in+graphs&ie=UTF-...

math
A had 3 wins, one loss and one draw in relation to B. That means 5 games.

algebra
5/20* 2/19* 1/18

math
$3.15/3.875 = $.81 Compare to $1.60 Not "more than 2 times the price."

Biology
Think of it this way. Over which source would the experimenter have the least control?

math
First of all, online "^" is used to indicate an exponent, e.g., x^2 = x squared, and “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Also when multiplying/dividing, exponents are added/subtracted respectively. 5....

Math115
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 you later post.

algebra
good!

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

math
Close. h = (S-2πr^2)/2πr = S/2πr - r Online "^" is used to indicate an exponent, e.g., x^2 = x squared.

math (stats)
Examples P(not green) = 1 - .15 = ? Either-or probabilities are found by adding the individual probabilities. P(blue or orange) = P(blue) + P(orange) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of ...

Science
14 days = 14 * 24 * 60 * 60 seconds 2.5 m = 2.5 * 1,000,000 micrometers micrometers/seconds = ?

Algebra
L = 2W L*W = 259 Substitute 2W for L in the second equation and solve for W.

Math (?)
Lack data. Cannot copy and paste here.

Math work
Either-or probabilities are found by adding the individual probabilities. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(RB) = 7/38 * (7-1)/(38-1) = ? P(L) = 11/38 * 10/37...

Math (?)
Typos? Smallest digit means in one's place? 245 one digit MORE than the digit in the tens place?

Genetics
http://blogs.sciencemag.org/pipeline/archives/2016/04/18/the-myth-of-ethidium-bromide For further info, Google other sources.

Finite math and probability
P(Blue) = 7/16 P(Even) = 7/16 Either-or probabilities are found by adding the individual probabilities.

Principle of color
complement of red = green https://www.google.com/search?client=safari&rls=en&q=complement+of+red+color&ie=UTF-8&oe=UTF-8&gws_rd=ssl

principles of color
get it less saturated?

algebra
You added a negative sign in front of 800 when checking.

math
If it is not a continuous variable, 25. If continuous, 24.5.

maths
(2x)^2 --> 4Y 4Y is 300% greater than Y.

Probability
4/52 * 3/51 * 2/50 * 4/49 * 3/48 = ?

stats
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (.52)^4 * (1-.52) = ?

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.569)^3 = ?

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 3*10^-8 seconds = 1 m 3 seconds = ?m I'll let you find the solution.

Stat 154
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 5/100 * 4/99 * 95/98 * 94/97 * 93/96 * 92/95 * 91/94 * 90/93 = ? Or you could explore combinations and permutations. https://www...

Math
To solve for t (I'm assuming that is what you want to do.): Multiply both sides by 4 to get rid of the divisor. 2t + 14 = 3t + 36 Combine terms.

Math (?)
$8, unless you want to define your "four step plan."

Psychology
They differ in emphasis, especially motor functions, but interact via the corpus callosum. https://en.wikipedia.org/wiki/Lateralization_of_brain_function

maths
Welcome

maths
Only one possible outcome. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P (Both lemon) = 5/9 * (5-1)/(9-1) = ? P (both orange) = 4/9 * 3/8 = ? Either-or probabilities are ...

Grammar
She lit scented candles, so the air will smell sweetly.

math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 2x^2 - 6x - cx + a + 6

Statistics
True

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 = (score-mean)/SEm SEm...

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability in the smaller area for the Z score of 1.32.

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for the Z score of 1.32.

Statistics
Mutually exclusive — each thing makes the other thing impossible : not able to be true at the same time or to exist together. Independent — one variable does not effect another. If they are neither, they can occur together and one variable effects another.

foundations of algebra
x = first piece x+15 = second piece 2x+5 = third piece x + (x+15) + (2x+5) = 100 Solve for x, then others.

Math
To me, if it moves "10 feet in 2 minutes," then it would move 5 feet in one minute. 5 ft ≠ .2 ft

statistics
Rolls < 6. 1, 1 1, 2 1, 3 1, 4 2, 1 2, 2 2, 3 3, 1 3, 2 9/36 = ?

math
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. Multiply by 250.

Pre-Algebra.
Round to .001?

biology
Consult blood flow diagram on Google.

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

Biology
What are your choices? will, basic?

Math
What are you choices? You cannot copy and paste here.

statistic
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

elementary algebra
44/(7+4) = 44/11 = 4 7 * 4 = 28 4 * 4 = 16 16 + 28 = 44

Math (?)
What is your question?

Math
at 1 cm each cut, 21 + 27 = 48

Math (?)
It doesn't make sense. Summing two positive numbers will not get a negative.

Math
5/6 * 3/10 = ?

Maths
It would help if you proofread your questions before you posted them. x = 75 degrees

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