Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 17,986

**statistics**

The sample is too small for a confidence interval to be really meaningful. 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 varia...

**Math**

9500

**stats**

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 "area...

**Science**

Molecules, atoms, protons, neutrons and electrons?

**epi (?)**

What diagram?

**math**

All correct.

**math**

Most of Steve's answers do not fit the requirement of "The digit in my hundreths place is one less than the digit in my thousansths place."

**math**

.189 .178 .156 .145 .134 .123 Which do you want to use?

**science**

x * 15 * 6 = 216 Solve for x.

**math (?)**

Gets what?

**math (?)**

What is your question?

**math**

(5 * 24) + 8 = ?

**ENGLISH 111**

What is your area of interest? Enjoyment of the date? Repeated dating? Leading to a permanent relationship? Whichever: Online dating is (not) as satisfactory as traditional dating.

**finite math**

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

**finite math**

.445

**math**

No figure shown. You cannot copy and paste here.

**math**

Use process indicated in previous posts.

**math**

Transpose two values on the left-hand side of the equation. -x = 48675 - 57865 - 23129 = ? Then multiply both sides by -1.

**math**

Transpose two values on the left-hand side of the equation. x = 2240 - 5277 + 9384 = ?

**Statistics**

A. .9498 E. (454+741+1058)/(478+833+1644) = ?

**math**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Also, it would help if you proofread your questions before you posted them. How many of each color? How specifically do you want it rounded?

**algebra**

Add the two equations to cancel out y. 5x = -15 You should be able to work it from there.

**Statistics**

What is the standard deviation? T = 50 + 10SD

**Algebra**

Add the two equations. -x = 2 -4 - y = -1 y = ?

**science:biology**

They all carry blood.

**statistics for health research**

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 scores.

**Physics needs help**

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

**Psychology?**

Person

**Math**

"<" indicates that the previous value is LESS than the following value. ">" indicates that the previous value is MORE than the following value.

**Algebra II**

a and b. Anything to the first power ("^1") is that value, 100^1 = 100. c. There is a middle (xy) term missing. d. The x^2 values combine but do not cancel each other out.

**psychology**

What information do you want from us? Here is a guess. https://www.google.com/search?client=safari&rls=en&q=correlation+coefficient&ie=UTF-8&oe=UTF-8&gws_rd=ssl

**Algebra**

(x-3)(x+5) = ?

**Anatomy**

https://www.google.com/search?client=safari&rls=en&q=model+of+blood+flow+through+the+heart&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/s...

**psychology (?)**

To what question?

**Anatomy**

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.

**science cant figure it out**

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

**algebra (?)**

What is your question?

**Math**

It would help if you proofread your questions before you posted them. Online "^" is used to indicate and exponent, e.g., x^2 = x squared. Online, “*” is used to indicate multiplication. 7-9. Correct. 10. There is no equation. Equation requires equal sign (=...

**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.

**Maths**

How do you expect use to help you on this message board?

**algebra**

4^3 - 5(4)^2 + 4 = 64 + 80 + 4 = ?

**statistics (?)**

What "lines below"?

**statistics**

There is no relationship.

**Math (?)**

Data missing.

**biology**

After 30 minutes = 2, after 60 = 4, after 90 = 8.

**biology**

After 30 minutes = 2, after 60 = 4, after 90 = 6.

**algebra (?)**

What is your question? With two unknowns, cannot solve without more data.

**Psychology**

If you cannot understand the above site, possibly this might help. Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n ...

**algebra (?)**

What following?

**math**

What criteria would you use to indicate "better"?

**Mathematics (?)**

No graph. No question.

**Math**

Right.

**Math**

3x + 40 = 2(x+17) = 2x + 34 x = -6 4(-6 -9) = ?

**Math (?)**

What statements? You cannot copy and paste here. Just guessing: Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to your Z scores.

**Stats**

a - d. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores. e. Reverse process, starting with .25 and its Z score

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.01 for two-tailed) and its Z score (score in terms of standard deviations). 98% = mean ± 2.33 SEm SEm = SD/√n

**math-roskdale (?)**

Scale lacking. The Z score is the raw score in terms standard deviations (SD). It is one type of standard score, cutting off the same percentages for any normal distribution. Z = (score-mean)/SD Find the mean first = sum of scores/number of scores Subtract each of the scores f...

**math**

95% = mean ± 1.96 SEm SEm = SD/√n

**statistics**

https://www.google.com/search?client=safari&rls=en&q=difference+between+small+and+large+samples&ie=UTF-8&oe=UTF-8&gws_rd=ssl

**algebra**

Do you have a typo? "4x-4x" = 0 They cancel each other out.

**math question**

Agree

**English**

I would pick B.

**math (?)**

What is "it"?

**Math**

The Richter Scale is logarithmic, 5-2 = 3. 10^3 = 1000

**lıfe scıence (?)**

What kind of milk and cereal? How big is a serving?

**lıfe scıences**

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

**lıfe scıences (?)**

What packet?

**MATH**

Multiply by 4. 6x + x - 2 = 40 Combine terms. 7x = 42 You should be able to take it from here.

**math (?)**

I have no idea what you are referring to. Lack needed data.

**random question about writing**

If nobody is available to proofread your work, you can do this yourself. After writing your material, put it aside for a day — at least several hours. (This breaks mental sets you might have that keep you from noticing problems.) Then read it aloud as if you were reading ...

**math**

Z = (score-mean)/SD Consult your table with the Z score. Multiply by 60.

**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 related to the Z score.

**Scientific nottion**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate and exponent, e.g., x^2 = x squared. 3.0 * 10^6

**Science Plzz Help**

disagree

**math (?)**

No column data given. Cannot copy and paste here.

**math!!**

8.58/9 = ?

**statistics**

From your data, it looks like 84 took politics and 16 took history. There is no information to indicate how many took both.

**Meiosis and mitosis**

Only half, so combining egg and sperm does not double the number of chromosomes.

**algebra**

Total bill = 1.13 * meal

**biology (?)**

Who is mating with whom? For example AA with AA, all offspring would be AA.

**PLEASE HELP CHECK ANSWER SCIENCE**

agree

**college algebra**

If w = width, then length = w + 20 w(w+20) = 8000 Solve for w, then length.

**Two numbers with exponents??**

When multiplying, add the exponents. 3^36

**Science Plzz Help**

agree.

**Algebra**

We cannot graph here. Put various values for x and solve for y. Put these on a scatterplot to graph. I'll start you out. if x = 0, 4y > 20, y > 5.

**algebra**

Assuming there is no difference between capitals and lower case: When dividing exponents, you subtract their value. x^7 h^9

**math (?)**

It would help if you proofread your questions before you posted them. No data on shirt. If you mean shoes, (1-.30)45 = ?

**algebra**

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.

**Science**

1. A 2. C 3. D 4. B 5. D

**SCI 207 (?)**

Lacking data. What cycles?

**Science**

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

**biology**

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

**Health insurance (?)**

What is your question?

**Statistic**

To do the calculations yourself for 3 and 4: Range = highest score - lowest 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 vari...

**Algebra**

-9 -3 + 9 - 7 = -10

**Algebra**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. (-5)(-8) - (6*6) = 40 - 36 = 4

**Algebra/I think I did this wrong**

Z = (score-mean)/SD = (180-170)/5 = 2 a. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between score and mean for Z score. Multiply by 50 ≠ 29 b. Z = (176-170)/5 = 6/5 ...

**Simplify Polynomials**

Don't know about "7ft1". Combine like terms. -2x^2 + x + 3

**Algebra 2**

What are your formulas?

**bio**

Is the PKU gene represented by P or p? If the latter, C is correct for the last statement. Cannot respond to first two questions, because parental genotypes are not given.

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