Wednesday

September 2, 2015
Total # Posts: 20,146

**Statistics**

98% = 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 (±.01) and its Z score. Insert data and calculate.
*July 20, 2015*

**math**

See Smith's posts.
*July 20, 2015*

**math**

8/2 = 4, so it is reduced by a factor of 4. The same would be true for the length.
*July 20, 2015*

**math**

See Smith's posts for process.
*July 20, 2015*

**math**

Are you Keon or Smith or both? If both, only use one address. See Smith's answers.
*July 20, 2015*

**math**

Use same process.
*July 20, 2015*

**math**

Move -2.75 to the left side.
*July 20, 2015*

**math**

Use process shown in previous post.
*July 20, 2015*

**math**

(15 * 20)/2.5 = ?
*July 20, 2015*

**math**

1.5 * 4 * 7 = ?
*July 20, 2015*

**maaaath**

His cost is 650/250 = 2.6 per apple No idea of his selling price, since I don't know how much his markup is.
*July 19, 2015*

**Business Stats**

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. Z = (score-mean)/SEm SEm = SD/√n
*July 19, 2015*

**science**

Bake one batch with brown and one with white to compare thinness.
*July 19, 2015*

**science**

What is your hypothesis? 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.
*July 19, 2015*

**statisitics**

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.
*July 18, 2015*

**Math**

Let x = starting money x - 2/3x - 2/3(1/3x) = 200 Solve for x.
*July 18, 2015*

**College Algebra II**

(a) 50 + 1000 + 2(1500) + 2(8500) + 3000 = ? I am assuming that the patient needed an anesthesiologist. (b) Go through the same process.
*July 18, 2015*

**probability**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Assuming that the pick is either one box or the other "ball," either-or probabilities are found by adding the individual ...
*July 16, 2015*

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Could be any of a multitude of numbers. What are your choices?
*July 16, 2015*

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared.
*July 16, 2015*

**PSYCH**

Google both theories and compare. https://www.google.com/search?client=safari&rls=en&q=Mackintosh's+theory+of+attention&ie=UTF-8&oe=UTF-8&gws_rd=ssl https://www.google.com/search?client=safari&rls=en&q=Rescorla+Wagner+theory+of+attention&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*July 16, 2015*

**PSYCH**

I would go with B.
*July 16, 2015*

**Psychology**

Typically the "none of above" is the last choice, so it refers to all of the preceding alternatives. In this case, it would only refer to A.
*July 15, 2015*

**Career Choice**

In choosing a possible career, it might help to talk to your school counselor, who can ask specific questions to help you to consider choices. S/he can also give you interest tests to suggests careers that might appeal to you.
*July 15, 2015*

**math**

(Standard error of sample means) SEm = SD/√n Calculate and compare.
*July 15, 2015*

**percentiles**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Not knowing the distribution of scores, I don't know if your calculations are correct. Unless you have instructions to the contrary, I would round.
*July 14, 2015*

**Career Choices**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. In choosing a possible career, it might help to talk to your school counselor, who can ask specific questions to help you to consider choices...
*July 14, 2015*

**Math**

Formula "b 0.01m0.7" is unclear.
*July 13, 2015*

**Psychology**

Outside of fatigue, what other environmental factors effect IQ? Were both administrations standardized? What is the reliability of that IQ test? Did the socioeconomic factors improve? https://en.wikipedia.org/wiki/Environment_and_intelligence Don't just copy the material. ...
*July 13, 2015*

**Math**

First of all, 150 + 50 + 30 ≠ 250 With that: 1) 50/250 = ? 2) 1 - 30/250 = ?
*July 12, 2015*

**Psychology**

A UR is in response to a US, while a CR is in response to a CS. They can both be the same, but may differ in magnitude.
*July 12, 2015*

**Psychology 20 (HELP)**

Traits that can be modified with training are due to nurture, those that cannot are do to nature. However, environmental factors can effect the phenotypical traits that are typically determined by genetics (nature), e.g, diet.
*July 12, 2015*

**math**

Summing refers to adding.
*July 12, 2015*

**Psychology 20 (HELP)**

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.
*July 12, 2015*

**ethical DILEMMA**

Google each of the philosophers names along with "views on violent resistance."
*July 12, 2015*

**statistics**

1. 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. 2. Z = (score-mean)/SEm SEm = SD/√n Use same table.
*July 11, 2015*

**prob & stat**

No Picture
*July 11, 2015*

**english**

What are you doing (or plan to do) during your summer vacation?
*July 10, 2015*

**statistics**

SEm = SD/√n Do the math.
*July 9, 2015*

**Statistics**

Way off. Probability = ticketed drivers/total = 298/527 = ? 1/527 = P(a particular driver was stopped) 1/298 = P(a particular driver was ticketed)
*July 9, 2015*

**math**

What statements?
*July 8, 2015*

**math**

Since this is not my area of expertise, I searched Google under the key words "algebraic verification of 4 sectors of the circle" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=algebraic+verification+of+4+sectors+of+the+circle&ie=...
*July 8, 2015*

**statistics**

What determines bonuses? Z = (score-mean)/SD If Z = +1.00 does: 1 = (score - 8500)/1500 Solve for score.
*July 7, 2015*

**statistics**

Need data. https://www.google.com/search?client=safari&rls=en&q=venn+diagram+maker&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*July 7, 2015*

**science**

Since this is not my area of expertise, I searched Google under the key words "speed of water evaporation" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=speed+of+water+evaporation&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...
*July 7, 2015*

**Psychology**

An attitude is much more consistent than a "passing thought." Typically it determines your behavior.
*July 6, 2015*

**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*

**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*