Wednesday

May 27, 2015

May 27, 2015

Total # Posts: 19,889

**Algebra**

agree.
*August 23, 2014*

**stat**

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...
*August 23, 2014*

**stat**

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. Is it significant?
*August 23, 2014*

**Science**

Agree.
*August 22, 2014*

**Spanish**

evoking a past age
*August 22, 2014*

**math**

S + L + J = 41 L + 5 = J L - 6 = S (L-6) + L + (L+5) = 41 Solve for L, then S and J.
*August 22, 2014*

**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 the Z score. Multiply by 15.
*August 22, 2014*

**statistics**

a. average of April sample b. weight c. No data given
*August 22, 2014*

**Science**

Agree.
*August 21, 2014*

**Sociology**

This question is asking what YOU think.
*August 21, 2014*

**Sociology**

They both explain different aspects of societies. See http://drdavespsychologypage.homestead.com/Decision_Trap.pdf
*August 21, 2014*

**Algebra 1**

($1050 - $800)/7months = ?
*August 21, 2014*

**algebra**

Add the two equations. 12x = 6 Solve for x and then insert that value into one of the equation to find y. To check, insert x value into the other equation.
*August 21, 2014*

**Health**

Yes. At least that happens with my scale.
*August 21, 2014*

**math algebra**

2/100 * A = p
*August 21, 2014*

**math algebra**

6 * 1/2 = 3 hours
*August 21, 2014*

**math**

C = πd I don't see how the value for the circumference and diameter could both be 7. Do you have a typo?
*August 21, 2014*

**math**

Something does not make sense. If the boat is full while paying 10, wouldn't adding 3 students overload the boat? Also some data is missing. What is the total charge for the boat?
*August 21, 2014*

**math**

Let x = son's age, and y = father's age y = 7x y-2 = 13(x-2) = 13x - 26 Substitute 7x for y in the second equation. 7x - 2 = 13x - 26 Solve for x, then put that value into first equation. Check by putting both values into the second equation.
*August 21, 2014*

**maths**

A = 1/2bh 1.84 = 1/2b(1.6) Solve for b.
*August 21, 2014*

**maths**

A = 1/2bh 1/3 = x/A Insert values to solve for A, then x.
*August 21, 2014*

**maths**

To conceptualize the order, convert to decimals.
*August 21, 2014*

**Physics needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*August 21, 2014*

**math**

8/16575 = .000483
*August 20, 2014*

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. For subsequent picks, the deck lacks one more card. 4/52 * 4/51 * 4/50 = ?
*August 20, 2014*

**math**

You don't indicate whether the remaining persons own bonds or neither bonds or stocks. If the former, I agree.
*August 20, 2014*

**math**

3x + 2(-2) = -7 Multiply. 3x - 4 = -7 Add 4 to both sides. 3x = -3 Divide by 3. x = -1
*August 20, 2014*

**Math**

Since it is two-tailed, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05 rather than .10) and insert its Z score in the equation below. 90% = mean ± 1.645 SEm SEm = ...
*August 20, 2014*

**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 for each Z score.
*August 20, 2014*

**biology**

Yes, both do reproduce.
*August 19, 2014*

**Science**

agree.
*August 19, 2014*

**statistics**

The expected number would be 41/75 * 100 = 55, but I don't see data that would allow me to estimate a significant difference from that value.
*August 19, 2014*

**math (?)**

Lacking sufficient data.
*August 19, 2014*

**statistics (?)**

Where is the data?
*August 19, 2014*

**statistics**

I assume that you are talking about the standard error of the mean. SEm = SD/√n
*August 18, 2014*

**Health**

Agree.
*August 18, 2014*

**Health**

Agree.
*August 18, 2014*

**math**

L = 3W - 7
*August 18, 2014*

**Biology**

The metabolic differences are the answer. Birds are endothermic, while reptile are ectothermic.
*August 18, 2014*

**life science**

Wouldn't leaves lose water content more quickly? Relate that to adaptation.
*August 18, 2014*

**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 each Z score.
*August 17, 2014*

**math**

Yes, assuming x = # of minutes.
*August 17, 2014*

**math**

⁄Mia Culpa! Sorry.
*August 15, 2014*

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. For blue = 4/6 * 3/5 = 2/5 For green = 2/6 * 1/5 = 1/10 Either-or probabilities are found by adding the individual probabilities...
*August 15, 2014*

**Language**

Me too.
*August 14, 2014*

**Language**

Sentence is correct.
*August 14, 2014*

**Language**

Right.
*August 14, 2014*

**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 (.8000) and its Z score. Insert Z score in the equation above and solve for score.
*August 13, 2014*

**Biology: Genetics**

Yes.
*August 13, 2014*

**Biology: Genetics**

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.
*August 13, 2014*

**Biology (?)**

Lack data. What previous four questions?
*August 12, 2014*

**Earth Science**

Although this is not my main area of expertise, I would agree.
*August 12, 2014*

**psychology**

She could also be a sociologist.
*August 11, 2014*

**Stats**

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. What do you think the answers are?
*August 11, 2014*

**POL201**

Since this is not my area of expertise, I searched Google under the key words "idea of original intent" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=idea+of+original+intent&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can ...
*August 11, 2014*

**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 of the Z score. This is for one student. With 3 students, the probability would be 3 times as likely. Either...
*August 11, 2014*

**ENG 1511/101**

Congrats on whatever goal you have achieved!
*August 11, 2014*

**math**

.15x + .75y = 297 (multiplied by 3) .15x + .05y = 108 Subtract second equation from first and work it from there.
*August 10, 2014*

**Math**

.9x - .6y = 12 .4x + .6y = 10/23 Add the two. 1.3x = 12 10/23 You should be able to work it from here.
*August 10, 2014*

**maths**

It would help if you proofread your questions before you posted them — "hundred digit its time the unit digit"? This is my best estimate: 862
*August 10, 2014*

**Science needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*August 9, 2014*

**Math**

Are you talking distance or time? http://www.cyberphysics.co.uk/topics/forces/stopping_distance.htm
*August 9, 2014*

**math**

https://www.google.com/search?client=safari&rls=en&q=median+test&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*August 9, 2014*

**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 related to the Z score.
*August 9, 2014*

**science**

Is there any wind to cause erosion?
*August 9, 2014*

**Eng1511**

You are welcome!
*August 8, 2014*

**Eng1511**

8A -This is great news indeed; I can't believe I made it! 6A -I am going home now; I wish I could get home before it starts to rain. http://www.grammarbook.com/punctuation/semicolons.asp Otherwise, it is fine.
*August 8, 2014*

**Biology**

Why would you plot (0, 0) if it is not one of your values?
*August 7, 2014*

**Maths (?)**

What is Your Question?
*August 7, 2014*

**math**

Scatter?
*August 7, 2014*

**mathematics word problems**

1/3x + 1/2x + 30 + 60 = x Change fractions to common denominator and solve for x.
*August 7, 2014*

**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 "...
*August 7, 2014*

**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 of the Z score.
*August 7, 2014*

**Math**

24/6 = ? = r C = 2πr^2
*August 7, 2014*

**statistics (?)**

What does c and d signify?
*August 6, 2014*

**Computer needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*August 6, 2014*

**Psyc, statistics**

This should help: http://drdavespsychologypage.homestead.com/Proving_a_Point.pdf
*August 6, 2014*

**Interpersonal Communication**

The first two qualities benefit, while the last two negate interpersonal communication.
*August 6, 2014*

**Psychology**

"If people define situations as real, they are real in their consequences." W. I. Thomas, 1923
*August 6, 2014*

**science**

There are two independent variables — foods and temperature, with whatever criterion you want to indicate the cooking results as the dependent variable.
*August 5, 2014*

**Stat**

a. In a normal distribution, 50% are above the mean. For confidence interval, 95% = mean ± 1.96 SEm b. 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 ...
*August 5, 2014*

**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?
*August 4, 2014*

**Statustics**

a. 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 between the two Z scores. Multiply by 100 to get %. b. Find table in the back of your statistics text ...
*August 4, 2014*

**statistics (?)**

No data given.
*August 3, 2014*

**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 = 1.96. 95% = mean ± 1.96 SEm
*August 2, 2014*

**statistics**

Yes and Yes.
*August 2, 2014*

**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 that Z score. For the sample mean, Z = (score-mean)/SEm SEm = SD/√n Use same table for the Z scores.
*August 2, 2014*

**math**

I see 8 positons, which include both before and after all the consonants and the present one.
*August 2, 2014*

**statistics**

You would have 8 cells. With such a small sample, you will need a correction for that fact. http://udel.edu/~mcdonald/statsmall.html
*July 31, 2014*

**Finance needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. I would need definitions of M1, M2 and M3, since I don't have the Fed definitions.
*July 31, 2014*

**Statistics (?)**

It would help if you proofread your questions before you posted them… "a _____ level"? If you mean alpha error level, the statement is true. The less likely error is, the more confident you can be.
*July 30, 2014*

**Research Methods**

As long as the distribution is normal, the SD cuts off particular percentages. As the distribution deviates from normal, these percentages no longer apply.
*July 30, 2014*

**English**

https://owl.english.purdue.edu/owl/resource/747/02/
*July 29, 2014*

**PUBLIC SPEAKING**

"informative" is all it does.
*July 29, 2014*

**maths lit,life science,economics,history**

It's your decision. However, consulting a guidance counselor will help you make your decisions, since your interests will probably fit more than one career. They have interest tests that should help you decide. Even so, you still would need to acquire the skills related to...
*July 29, 2014*

**physical**

In the future, for this type of question, you can consult your online or hard copy dictionary. cell 1. a small room in which a prisoner is locked up or in which a monk or nun sleeps. synonyms: room, cubicle, chamber; More historical a small monastery or nunnery dependent on a ...
*July 28, 2014*

**Science**

It would be helpful, if you explored a question that is significant for you. Have you never asked, "Does A have any effect on B?" Pick a topic that relates to your life. We can't do that for you.
*July 28, 2014*

**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 (.10) in the smaller area and find the Z score. Insert in equation above to find the score.
*July 27, 2014*

**Biology**

I agree with bobpursley.
*July 27, 2014*

**Biology**

Agree
*July 27, 2014*