Sunday

July 5, 2015

July 5, 2015

Total # Posts: 20,004

**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*

**health and nurtition**

B
*July 3, 2015*

**math**

1/36
*June 30, 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**

https://www.google.com/search?client=safari&rls=en&q=slope+equation&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*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**

No. https://www.google.com/search?client=safari&rls=en&q=DSM+5+Axes&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*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*

**math**

Yes.
*June 18, 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*

**algebra**

What is your question?
*June 16, 2015*

**math**

V = w * L + h = 4 * 23 * 7 = 644 Yep!
*June 16, 2015*

**Math**

Assuming that it is a square with three matchsticks on each side, matchsticks can be added internally to give nine squares with each side of one matchstick.
*June 15, 2015*

**Math**

"ordered pairs"? Total cost = $30x
*June 15, 2015*

**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 95% = mean ± 1.96 ...
*June 15, 2015*

**Statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. 99% = mean ± Z * SEm SEm = SD/√n = s/√N
*June 14, 2015*

**math**

100,000
*June 14, 2015*

**Statistics**

Neither. r varies between +1 and -1.
*June 13, 2015*

**Statistics**

95% = 148 ± 1.96 (35/30) =148 ± 1.96(1.17) = 148 ± 2.287 = 145.713, 150.287 Is that what you calculated?
*June 12, 2015*

**math**

Typos. If you draw 12, how would you get "5 out of 10" any color?
*June 12, 2015*

**STATS**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/56 * 1/(56-1) * 1/59 = ?
*June 12, 2015*

**Statistics**

Use correlation coefficient. https://www.google.com/search?client=safari&rls=en&q=correlation+coefficient&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*June 12, 2015*

**Statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. 3 = Z (s/√n) = 2.575 (15.8/√n) Solve for n.
*June 12, 2015*

**Statistics**

Agree.
*June 11, 2015*

**Math (Finite)**

Lacking data. What is the makeup of the group they are selected from?
*June 11, 2015*

**Math (Finite)**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 10^5 = ?
*June 11, 2015*

**Biology**

Use Pennett square for father (pp) and mother (Np). https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*June 11, 2015*

**Math**

What parts?
*June 11, 2015*

**Stats**

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.
*June 11, 2015*

**Stats**

See later post.
*June 11, 2015*

**Biology**

Use Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*June 9, 2015*

**statistics**

P = 100!/(2!)(100-2)! = 100!/(2)(98!) = 100*99/2 = 9900/2 = ?
*June 9, 2015*

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
*June 8, 2015*

**Stats**

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.
*June 7, 2015*

**Algebra**

Welcome
*June 7, 2015*

**Algebra**

The answers you have chosen are right. For unanswered problem, .018 * 800 = ?
*June 7, 2015*

**math**

V = π r^2 * h = π (8/2)^2 * 8 = π * 16 * 8 = ?
*June 6, 2015*

**math**

P = n!/r!(n-r)! = 7!/5!(7-5)! = (7*6)/2 = ?
*June 6, 2015*

**math**

V = π r^2 h = π (14/2)^2 * 20 = π 49 * 20 = 980 π 980 π = π (10)^2 * h 980 = 100h Solve for h.
*June 6, 2015*

**Math**

32/(18+30+32) = ?
*June 6, 2015*

**Stats**

No numerical data.
*June 5, 2015*

**Bio**

Changes
*June 4, 2015*

**HELP!! 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 = (mean1 - mean2)/...
*June 3, 2015*

**Algebra 1**

Z = (score-mean)/SD
*June 3, 2015*

**Algebra**

Z = (score-mean)/SD
*June 3, 2015*

**Algebra 1**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/5 * 2/3 = probability they are chosen for speaking roles. Subtract from 1 to get chorus probability.
*June 2, 2015*

**math algabra**

W = 2L W * L = 162 2L * L = 162 Solve for L then W.
*June 2, 2015*

**STATISTICS**

Lacking Data.
*June 2, 2015*

**Math**

Welcome
*June 1, 2015*

**Math**

f(x) = .5(2x) = .5(2*2) = .5(4) = 2
*June 1, 2015*

**health**

However, they can be reduced or eliminated, if the person seeks therapy from a qualified psychotherapist. https://www.google.com/search?client=safari&rls=en&q=treating+anxiety+disorders&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*June 1, 2015*

**health**

However, they can be reduced or eliminated, if the person seeks therapy from a qualified psychotherapist.
*June 1, 2015*

**Math (Statistics)**

Data lacking. Without knowing population mean, standard deviation and sample size, it is impossible to know. 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 ...
*May 31, 2015*

**Algebra 1**

I saw 130, which minus 4 = 126.
*May 31, 2015*

**Algebra 1**

In contrast to Reiny, I factor to get (2x+18)(x-7) = 0 Since the distance cannot be negative: x = 7 x + 2 = 9
*May 31, 2015*

**Algebra 1**

Factor to solve for x, which cannot be negative. 126 = 3 * 2 * 7 * 3 = 18 * -7 Work it from there.
*May 31, 2015*

**Statistics**

Welcome!
*May 30, 2015*

**Statistics**

.1 + .1 + .2 = .4
*May 30, 2015*

**Math, help plz**

Data lacking. Whichever has the smallest frequency.
*May 30, 2015*