# 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