Friday

October 28, 2016
Total # Posts: 22,548

**math3, probability and statistics**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. If x = 5, I don't see how any of the other equations are valid (e.g., x^5= 10).

*December 9, 2015*

**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 related to the Z score. Is it greater or smaller than .05?

*December 9, 2015*

**math**

1.2x = 40 Solve for x.

*December 8, 2015*

**Research**

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results.

*December 8, 2015*

**statistics help**

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.

*December 8, 2015*

**Help with College Stat class**

Typical significance level is p ≤ .05.

*December 7, 2015*

**Statistics**

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. Agree.

*December 7, 2015*

**math**

Need specific problem as example.

*December 7, 2015*

**HELP**

These articles might also help. http://drdavespsychologypage.homestead.com/Be_Here_Now_.pdf http://drdavespsychologypage.homestead.com/Learning_Requirements.pdf http://drdavespsychologypage.homestead.com/Learning_Hints.pdf http://drdavespsychologypage.homestead.com/...

*December 7, 2015*

**Algebra 2**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared 3^4 - 6(3^3) - 4(3^2) - 18 - 2 = ?

*December 7, 2015*

**Math**

The sex ratio at birth worldwide is commonly thought to be 107 boys to 100 girls, although this value is subject to debate in the scientific community. The sex ratio for the entire world population is 101 males to 100 females. Order of birth bgg gbg ggb gbb bgb bbg ggg bbb

*December 7, 2015*

**Math**

Infinity minus one?

*December 7, 2015*

**Science plz help its really inportant**

Nucleus has heredity factors and is largest organelle.

*December 7, 2015*

**statistics**

It would help if you proofread your questions before you posted them. What is a "bidge cad"?

*December 7, 2015*

**Math**

The ones where you designate an answer are all correct. Give your best answer for the remainder.

*December 7, 2015*

**maths**

It would help if you proofread your questions before you posted them.

*December 7, 2015*

**math needs help**

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

*December 7, 2015*

**Math**

To differ by 54 one must be relatively high and the other low and they need to be even numbers.

*December 7, 2015*

**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 (±.005) and the Z score. Insert data into first equation to solve.

*December 7, 2015*

**Psychology**

First, do you see sweating as a stimulus or response? Second, is it something that has to be learned (conditioned)?

*December 6, 2015*

**Science**

Gravity on the moon is about 17% of earth's gravity.

*December 6, 2015*

**Math**

11 + .18m = 18 + .13m Solve for m, then substitute value for m on either side.

*December 6, 2015*

**Science**

The moons gravity is approximately 17% that of earth.

*December 6, 2015*

**Math - age problem**

L - 1 = 3(J - 1) L + 2 = 2(J +2) = 2J + 4 L = 2J + 2 Substitute 2J + 2 for L in the first equation and solve for J. Insert that value into the last equation to solve for L. Check by putting both values into the first equation.

*December 6, 2015*

**math**

5.665, 5.674

*December 6, 2015*

**Maths**

With range = 8 one of the missing numbers is 5 or 14. Mean = ∑x/n (5+6+11+9+7+8+13+x)/8 = 9 Solve for x. If necessary, try with 14.

*December 6, 2015*

**Biology**

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

*December 6, 2015*

**Science**

Total mass/ mass of one bag = number of bags

*December 6, 2015*

**math**

What is your question?

*December 5, 2015*

**statistics**

Ho: mean = 1400 Ha: mean < 1400 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.

*December 5, 2015*

**stat**

90% = 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 (p = ±.05) and its Z score. Insert data into first equation.

*December 5, 2015*

**Biology**

D, D, C

*December 5, 2015*

**Math please helppp**

No Polygon A. Cannot copy and paste here.

*December 4, 2015*

**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 related to the Z score.

*December 4, 2015*

**Opinion Question**

In many cases, technology allows us to exceed our limitations. Our strength is being able to develop the technologies.

*December 4, 2015*

**math 210 fundamentals of geometry**

No table. You cannot copy and paste here. Also, what is your question?

*December 4, 2015*

**math**

x + (x+44) = 180º Solve for x, then x +44.

*December 4, 2015*

**Algebra 1**

No Scatterplot. You cannot copy and paste here.

*December 3, 2015*

**Math HELP!**

It would help if you proofread your questions before you posted them. Incomplete. f(t) = ?

*December 3, 2015*

**sampling distributions & parameter estimation**

Expected mean = 50 SEm = SD/√n

*December 3, 2015*

**Language art 7th grade**

Look them up in a dictionary. If you don't have a hard copy, try http://www.learnersdictionary.com/definition/

*December 3, 2015*

**statistics**

15 * 2 = 30

*December 3, 2015*

**science**

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

*December 2, 2015*

**Mathematics**

Mean = ∑x/n (.87 + .89 + .91 + .85 + 2x)/6 = .9 Solve for x.

*December 2, 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.

*December 1, 2015*

**science**

Last one, Meiosis II

*December 1, 2015*

**Algebra 1**

When multiplying/dividing, exponents are added/subtracted respectively. (-x^3)(-x^1) = -x^4 = x^4 since minus times minus = positive

*December 1, 2015*

**Pre algebra**

50 - x < 39

*December 1, 2015*

**Math**

Combine terms. The x^2 terms cancel out. -2x-3 = -x-3 -x = 0 Do you have typos?

*December 1, 2015*

**Math**

See previous post. Multiply proportion found by 60.

*December 1, 2015*

**Math**

See previous post.

*December 1, 2015*

**Math**

Z = (score-mean)/SD Use the table.

*December 1, 2015*

**satistics**

Z = (score-mean)/SEm Score = 450/6 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.

*December 1, 2015*

**Algebra 1- A few questions, please help**

No table. You cannot copy and past here.

*December 1, 2015*

**Science**

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own Google search. Also see http://hanlib.sou.edu/searchtools/. Full Definition of CRATER. 1. a : the bowl-shaped depression around the orifice of a volcano. b : a ...

*December 1, 2015*

**Algebra**

a. When multiplying/dividing, exponents are added/subtracted respectively. b .4 c. 64x^6 d. When multiplying/dividing, exponents are added/subtracted respectively.

*December 1, 2015*

**math**

A) 1 foot = .3048 m (5.4*.3048)/810 = ? B) (5.4*12)/.4 = ?

*December 1, 2015*

**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 between the two Z scores. Multiply by 100.

*November 30, 2015*

**math**

Use same name. 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.

*November 30, 2015*

**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 between the Z scores. Multiply by 100.

*November 30, 2015*

**science**

System (without "eliminate")

*November 30, 2015*

**algebraic expression**

Right.

*November 30, 2015*

**Maths**

Mode is most frequently observed score. Mean = ∑x/n = (0*4) + (1*8)… /20 = ?

*November 30, 2015*

**Science plz help**

If you do not have these resources available to you, Google them.

*November 30, 2015*

**math**

Cannot make tables on this post. 5 * 6 = ?

*November 29, 2015*

**Chemistry needs help**

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

*November 29, 2015*

**Statistic**

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 (.15) and its Z score. Insert Z value into above equation and solve for score.

*November 28, 2015*

**Science**

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

*November 28, 2015*

**Science**

What squares and outline?

*November 28, 2015*

**math**

If P(3,6,8) means 3 or 6 or 8, then either-or probabilities are found by adding the individual probabilities (1/9). If P(3,6,8) mean 3 then 6 and then 8, if the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities ...

*November 28, 2015*

**math**

First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. You are talking about one side out of six.

*November 28, 2015*

**Math**

(990 - 900)/900 = ?

*November 28, 2015*

**algebra (check answers)**

1. 2(x+5) + 2(2x-1) = 2x+10 + 4X -2 = ? 2. First one right. 6x-8 - 2x + 5 = ? 3. Right

*November 28, 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.

*November 27, 2015*

**Science**

An experiment needs a control group.

*November 27, 2015*

**maths**

1. 1.01 * 50 = ? 2. 2L + 2W = Perimeter 3. 40 + 12(20) = ? Compare to 250.

*November 26, 2015*

**math**

2L + 2W = perimeter What is the width?

*November 26, 2015*

**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.

*November 26, 2015*

**statistics(business)**

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.

*November 26, 2015*

**science**

Revolution of what?

*November 26, 2015*

**Statiatics**

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. I'll help on the last one. 5/(5+4+3) = ?

*November 25, 2015*

**Math (?)**

How can a car go 50 mph in zero hours?

*November 25, 2015*

**HEALTH PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!**

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. Resubmit with your answers.

*November 25, 2015*

**Science**

Because we don't know what an "átomo" is?

*November 25, 2015*

**Ciencias**

Trato contestar en Inglés. Antibiotic use can promote development of antibiotic-resistant bacteria. Every time a person takes antibiotics, sensitive bacteria are killed, but resistant germs may be left to grow and multiply. Repeated and improper uses of antibiotics are ...

*November 25, 2015*

**Ciencias**

Es mejor a preguntar en Inglés. No sé "estafiilococo."

*November 24, 2015*

**math**

Because the sum of the first column > 9.

*November 24, 2015*

**Math**

J - 6 = 4(F-6) = 4F -24 Therefore J = 4F - 18 J + 4 = 2F Substitute 4F-18 for J in the third equation and solve for F. Insert that value into the second equation to solve for J. Check by putting both values into the third equation.

*November 24, 2015*

**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. Standard deviation = square root of variance I'll let you do the ...

*November 23, 2015*

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Cannot post diagrams here.

*November 23, 2015*

**Algebra 2**

No data. Models of what? How long does it take to produce one model? What are the costs of producing one model?

*November 23, 2015*

**Science**

The moon is smaller than the earth, so its gravitational pull is less.

*November 23, 2015*

**psychology**

Sensory adaptation is becoming less sensitive to a stimulus after sensing it continuously for a period of time. Let me give you a real life example — mine. Decades ago, I worked in an old home with several buildings. Even though they tried to keep the buildings clean, the...

*November 23, 2015*

**math**

(8/3)/8 = x/11 (8/3)/8 = x/6 Solve for x.

*November 23, 2015*

**math**

What is your question? 40/7?

*November 23, 2015*

**math**

How many shrubs?

*November 23, 2015*

**Math**

12.5 * (1-.75) = blue 32/3 * (1-.8) = white Add blue and white.

*November 23, 2015*

**Math**

3.25/1 = x/2.75 Solve for x.

*November 23, 2015*

**MATH**

25.5 * 82 = ?

*November 23, 2015*

**Math**

20 - 6.5 - 29/8 = ?

*November 23, 2015*