# Posts by PsyDAG

Total # Posts: 23,307

**Science**

Sure.

**Math**

Median is defined as the point where 50% of the values lie below and 50% lie above.

**Math**

3*9 + 7 - 15 = ?

**Algebra PLEASE HELP ASAP**

Agree on all.

**Statistics**

If you are only considering one question, 1/4.

**Math**

-30 = 3(-10)

**Math (?)**

Typos? (14+2)2 - 2 = 16*2 - 2 = 32-2 = 30

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 2/5 * (2-1)/(5-1) = ?

**Math**

Disagree. Look up definition.

**???**

Can you print your whole question in English?

**Maths**

L = 3B 2L + 2B = 2(3B) + 2B = 84 Solve for B, then L.

**Math**

7.5

**Math Please Help (?)**

No graphs. Cannot copy and paste here.

**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

**Math**

One Gallon = 4 quarts One pint = 2 cups one Quart = 2 pints

**math**

Convert all to cl. 1500 - 20x = 60 Solve for x.

**Science (?)**

What is your question?

**Math**

4/12 = ?

**math**

Answering your question for one toss. Are you looking for P(2-4)? Either-or probabilities are found by adding the individual probabilities.

**algebra**

Subtract 2x^2+5x-10 (from?) 3x^2-x+9 (3x^2-x+9) - (2x^2+5x-10) = x^2 -6x + 19 What grid?

**MATH**

2 + (-3) = ? -7 + 4 = ? -1(-7) = 7 Typo?

**Algebra**

Object 1 travels 9 feet per second. Object 2 travels 10 feet every 60 seconds.

**Math**

Assuming that you want to generalize to all cancer patients, all cancer patients would be the population, the 675 patients would be the sample, and the 76% and 63% are statistics.

**Statistics**

Wouldn't the probability of rejecting the null hypothesis be easier(more likely), if you have a larger alpha level? In other words, if you are using P=.05 it is easier to reject the null hypothesis than if you were using P=.01.

**Stat**

Do you have a typo? It would take an extremely deviant score (>100) to drop the mean from 100 to 9 by omitting it.

**algebra**

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

**Math**

Assuming that two numbers that = 11 are the tens and hundreds places: 6 + 5 = 11 659

**Math**

(17+15)/total number = ? Multiply ? by 100.

**science help pls pls**

If a plurality of scientists disagree, would you call it accurate?

**Algebra**

How about C, S and U too?

**statistics**

Z = (score-mean)/SD (one trout) 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. Z = (score-mean)/SEm SEm = SD/√n Use Same Table. 93.8% = mean &...

**maths olympiad**

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

**math**

One similarity is that 85, 17, 19 and 2 are all < 100.

**Genetics**

All the children will receive the dominant X^D from mommy. What does that tell you?

**math (?)**

How big is the container that is being painted?

**math**

Ones digit is 9, hundreds is 3.... Take it from there.

**Maths**

B = A + 15 B + 25 = 3A Substitute A+15 for B in the second equation and solve for A.

**Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events (9/10).

**statistics**

Z = (mean-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 Z. Is it ≤ .01?

**math 102**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 95/100 * 95/100 * 5/100 = ?

**prealgebra**

You are welcome.

**prealgebra**

Incorrect probability. P(5) = 1/6 for one toss P(5) = (1/6)^12 for 12 tosses However, with your data, I would agree with C.

**Math**

Doesn't a plus sign (+) tell you to add? m^2 - 9

**math**

1.25/20 = x/6 Solve for x.

**GEN.**

In terms of perception, background is the area around whatever your figure is. In terms of a person, background is his/her past experiences.

**Physics**

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

**science**

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

**Math-probabilities**

13,100/312,000,000 = ?

**Math (???)**

You assume that we know the grading scale for your class. Wrong assumption.

**math**

a. 99% = mean ± Z SEm SEm = SD/√n find the table in the back of your text labeled "areas under normal distribution to find the proportion (±.005) and its Z score. Insert into equation above and calculate. b. One is increase sample size.

**math**

When multiplying terms, you add the exponents.

**math**

20/6 = 3 1/3 cases needed. Given that, how many extra packs will she have?

**Math needs help**

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

**science**

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

**Biology**

Right

**Math**

What if it wasn't cut into 8 pieces? 6/19 = ?

**Mathematics**

Still need more data.

**Mathematics**

Need More data. Base?

**Healthcare Statistics**

t with 18 df at .05 = 2.101 What does that tell you?

**Math**

Need data. What facts beside those two numbers do you have?

**spanish**

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 are your answers?

**math**

Is the fourth included in those that fell on the floor? Was there a fifth pearl? If the first answer is no and the second yes, the other half of the pearls = 1 + 1 + 1 + 3 = 6

**Math**

x/2 + (x-3)/5 = 2/3x x/30 + (6x-18)/30 = 20/30x 15x + 6x - 18 = 20x 18 = x That's my answer too.

**stats**

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 (.10, .35 & .77) and the corresponding Z scores. Insert into equation above.

**academic and communicative skills**

Research health care delivery system problems on Google. https://www.google.com/search?client=safari&rls=en&q=Research+health+care+delivery+system+problems&ie=UTF-8&oe=UTF-8&gws_rd=ssl

**maths**

Add the two equations to give you: 2/x = 6 Solve for x, then y.

**English (?)**

How is this English?

**math**

60*2 + 15 - 45 - 35 = ?

**Science**

Moon gravity is only .17 that of earth.

**math (?)**

What do the dimensions stand for? length? width? Depth?

**Algebra**

Disagree.

**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 (.90) and its Z score. Insert in equation above and solve for score.

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/26 * 1/10 * 1/10 = ?

**Math**

Since the mean, median and mode are the same in a normal distribution, mean and median both probably 150. Since approximately 68% score ±1 SD, I would estimate SD at slightly less than 10.

**mathslit accounting life science tourism**

Consult your school counselor, who can estimate your abilities and interests and the careers they correspond to.

**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. See your later post.

**statistics**

4/5^17

**Science**

Something that allows a current to flow through it. A person who leads an orchestra.

**math**

To find it, just look at it. If you are asking for probabilities: even number = 1/2 >6 = 7 or 8, each = 1/8 Either-or probabilities are found by adding the individual probabilities.

**Math**

Put the value to zero for each one in the equation.

**Math**

Good!

**science**

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

**science (?)**

What is your question?

**Stat**

a. Either-or probabilities are found by adding the individual probabilities. 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. Add the two. b. If the events ...

**science**

Since this is not my area of expertise, I searched Google under the key words "titanium reacts with oxygen" to get these possible sources: https://search.yahoo.com/yhs/search?p=titanium+reacts+with+oxygen&ei=UTF-8&hspart=mozilla&hsimp=yhs-002 In the future, you can ...

**Math: Statistics**

It would depend on what level of significance you are using. Typically it is P ≤ .05. If you are using this cut-off point and the level you found was .061, you should say that the relationship was a chance one.

**math (?)**

You do not indicate how length is related to either width or height or the volume.

**Math- I'd really appreciate it if you could help!!**

We would appreciate it if you could state the problem without all the dollar signs ($).

**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. Also post with the same name. See your later post.

**mathes**

How do you define "under age"… less than the mean? Mean = sum of scores/number of scores I'll let you do the calculations.

**STAT**

99% = mean ± Z (SEm) SEm = SD/√n Z for ±.005 = 2.575 Calculate.

**mathematics**

Lacking data. What is its shape?

**Statistical work**

Z = (score-mean)/SD Use table In back of text labeled area under normal distribution. C. Either-or probabilities found by adding individual probabilities. D,E. Both probabilities found by multiplying individual probabilities.

**Stat HW for.**

1b. 1/4 = .25 Probability of both found by multiplying individual probabilities. E. .5 * (1-.25) = ?

**Statistics**

Z = (mean-mean)/SEm SEm = SD/sqrt n Use table in back of text labeled area under normal distribution.

**Statistical concept 68-95-99.7**

Don't repeat posts. It wastes our time responding to them. See your later post.

**Maths!**

Lacking data. How many colors/marbles?

**Stat**

Z = (score-mean)/SD Use table labeled area under normal distribution in the back of your text. Either-or probabilities found by adding individual probabilities. Both probabilities found by multiplying individual probabilities.

**3rd grade math**

Yes

**MATH**

A more exact answer to cups = 5/(5+1+3+2) = 5 /11 = .45