Posts by PsyDAG

Total # Posts: 23,510

stats
I don't know how you did it in class. 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 the Z score. How does it compare to your ...

Science
With multiple choice, treat each alternative as a T-F question. If you don't know right answer, before guessing, eliminate wrong alternatives. This increases the chances of your guess being correct. Chemical change.

health
Although all are true, I would pick tissues.

math

MATH
12 * 12 = 144 inches on each side. 144/9 = 16 (16*3)+2 = ?

Spanish
Right, but it requires a following verb.

Math
D = 3S (42+10) + S+10 + D+10 = 100 Substitute 3S for D in the second equation and solve for S. Insert that value into the first equation to solve for D. Check by putting both values into the second equation.

Math
I don't know about "free calculators" mean, but all you need to do is insert various values for x and calculate the y value that matches. e.g., y = 8-8 = 0

Statistics Range, Variance, and Standard Deviation
Range = highest value - lowest Find the mean = 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 ...

Statistics Homework
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 "...

Statistics
From the sample, with only 6 of 20 earning the degree in 4 years, it does not seem "common."

science
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 previous post.

Alegebra
When multiplying/dividing, exponents are added/subtracted respectively. 5^12 5x^2 + 6x - 2

science
The force was not great enough?

science
It would help if you proofread your questions before you posted them. How much did it increase per year? Remember, there are 3 years of interest.

math
10z - 4 + 8z - 8 = 18z - 12

Science
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.

Science

math (?)
What items? You cannot copy and paste here.

Math
-3 - 2 + 9 = ?

Math (?)
What size tiles?

ICT(?)
Lacking data.

ICT (?)
Lacking data.

life orientation (?)

DPS
10m + .1m(5*12) = ?

Science
Advice to the exam-lorn ("test wiseness") I. Answer easy items first. If have to think about any question after reading for more than a minute, move on. A. Can get Qs you are sure of correct within the time limit. Spending too much time on hard questions, might keep ...

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 5/14 * 2/(14-1) = ?

math
Question unclear. First draw 20/70 = ? Two draws, both green with replacement: If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 20/70 * 20/70 = ?

Math (?)
No designs shown. Cannot copy and paste here.

Math statistics
Approximately 50% if males are also included in the 25-35 group.

math
16 * 4 = ?

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/6 * 2/8 = ?

Pre-Algebra
4y + 4 + 3y - 18 + 14 = 28 Combine like terms and solve for y.

Statistics
SEm = SD/√n

Math
Need parentheses. (9-3)/(1/3+1)? 9 - (3/[1/3]) + 1? 9 - 3/(1/3+1)?

Math
8t + 12 = 8t + 12 (identity) -3m - 7 = -3m + 7 (Typo?) yes, t = 15

math (really?)
Start with ball, gall, mall, glub, glum, lamb, mull.... Can you think of others?

life sciences (?)
No graph or question.

Science ?
What data do you want to collect?

statistics
9 * 10^4

Statistics Algebra 2
How does a differ from c? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. b) (3/4)^20 c) "at least 6" translates to either 6, 7, 8, 9 or 10. Either-or probabilities ...

Maths
(1-2/3)x = 19 Solve for x.

Math
3/5q-(1/5+2q) = .6q-.2-2q = -.2-1.4q

Science
"High, thin, feathery clouds" are not the ones that cause any rain.

math
p = M/9n

math
60(1-5/6) = 60(1/6) = 10 60 + 10 = 70 60 km in 5/6 hour = 70km/hr 54(1-2/3) = 54(1/3) = 18 54 + 18 = 72 54km in 2/3 hour = 72km/hr 72/70 = ?

Math

Stat
Typos? C is incomplete. I assume that (s) indicates your answer. Agree with d and b, but also would include a. How is e different than b?

Urgent =Math
Disagree. Sample of 6 too small.

Urgent =Math
agree on both.

science

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .25 * .25 * .50 = ?

Math
Something seems wrong here. Would this mean that, if the ride is only 9 miles, John would not have to pay anything?

Math
200/5 = 40/1 or 40 miles per inch. Take it from there.

Math (help)
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/2 * 3/6 = ?

math
When x = -2 then -5(-2+2) = -5(0) = 0

Math ---HELP!!!!!

Math ---HELP!!!!!
Agree.

Math ---HELP!!!!!
Disagree. "More than" includes everything below the mean.

Math ---HELP!!!!!
disagree Z = (score-mean)/SEm SEm = SD/√n Use previously mentioned table.

Math ---HELP!!!!!
agree

Math ---HELP!!!!!
right

Math ---HELP!!!!!

Math ---HELP!!!!!
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 100. However, if you realize that the mean and median are the same in a normal ...

Math ---HELP!!!!!
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 100.

Algebra
Perimeter = 2L + 2S Area = L*S

Maths
340/x

What is you question?

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/12 * 2/7 = ?

math

Science one question dont understand plz help ASAP
I don't understand your question either. Miles is distance, while months is time. Do you have some type of conversion equation?

Math
disagree. % above +1 SD.

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.

Math
agree.

Algebra (?)
Lacking data. Cannot copy and paste here.

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. How long is a marathon? Don't understand your hint. Typos?

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 later post.

Math

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.

math
Absolute value is the value regardless of the sign, 10.

math literacy, life science, history,sotho
Consult with your school counselor, who can help you assess your abilities and interests to determine which careers would suit you. Cost will vary with amount of advanced training needed.

Algebra
y = √(3x+3) For x = 2 y = √(3*2 +3) = √9 = 3

science
It is extremely unlikely that any tutor has access to your text. in addition, 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. You can submit...

math
How can player Pi win, if "i<j"?

Math
Welcome

Math
Assuminga normal distribution, 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 ...

Math
Since you are dealing with a select group, I would expect little variation. 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.

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 each Z score. Multiply by 80.

y = 3x + 4 2x + 3y = 10 Substitute 3x+4 for y in the second equation and solve for x. Insert that value into the first equation to solve for y. Check by putting both values into the second equation.

Psychology
It makes it easier for us to respond, if the answer is indicated in the question, e.g., ***. 13. correct 14. Assuming that people have self-limiting assertions, I would pick C. 15. Disagree 16. Disagree 17. disagree 18. disagree 19. disagree 20. DK Have you used your textbook?

Psychology
Disagree with all. Use your textbook!

Psychology
After responding to your later posts, I'm not even going to bother responding to this post until you indicate that you have put some real effort into finding the answers.

Psychology
You need to study. Disagree on both.

Psychology
Wrong again, B.

Math
To meet a 27 mpg requirement, you need to be at least 27 mpg.

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 other post.

Math (?)
No graph. Cannot copy and paste here.

science
internal pressure in the can

science