Wednesday
July 23, 2014

Posts by PsyDAG


Total # Posts: 17,969

math (?)
We cannot see your diagram, and you cannot copy and paste it. https://www.google.com/search?client=safari&rls=en&q=right+acute+and+obtuse+angles&ie=UTF-8&oe=UTF-8

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/3 * 1/3 = ?

Statistics
Either-or probabilities are found by adding the individual probabilities. Since three face cards are already spades, delete them for the face card probability. 9/52 + 13/52 = ?

Probability
Right!

Probability
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.

rutgers
With your data, you don't, unless you meant ∑(mean-x)^2 = 238 You have to 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 var...

math
33.60/4 *1000 = ?

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 "area...

A Peculiar Question
It is a learned method of relating to others. If it inconsistent over situations and persons, it can be considered an aspect of one's personality. However, whatever is learned can be unlearned… assuming that the person wants to unlearn it.

Algebra 1
The latter. Exponents are added when multiplying terms.

math
(11,000-8690)/11,000 = ?

Bio 20
Although this is not my major area of expertise, I would say D. For the same volume of water, a thin hose has more pressure than a larger one.

Science
Since this is not my area of expertise, I searched Google under the key words "brain lobes fetal pig" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=brain+lobes+fetal+pig&ie=UTF-8&oe=UTF-8 In the future, you can find the informati...

statistics
µ = 30 Variance for distribution of means = (SD/√n)^2 = ?

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 your later post.

math
I assume you mean 3/8 = 7/(x+1). Multiply both sides by x+1. 3/8x + 3/8 = 7 Subtract 3/8 from both sides. 3/8x = 6 5/8 = 53/8 Multiply both sides by 8/3. x = 53/8 * 8/3 = ?

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1. .2 * (1-.3) = ? Either-or probabilities are found by adding the individual probabilities. 2. (.2 *3.) + (.8 *.3) = ?

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 your last post.

Science
I agree.

algebra
Ah, better! l2xl > 16 x > ± 8

algebra
It would help if you proofread your questions before you posted them. There is no inequality given. An inequality requires either a < or > symbol.

maths
It would help if you proofread your questions before you posted them. Hard to know if the space denotes a comma or period or something else. 55,010 - 899 = 54, 111

STATS
To make a prediction, it doesn't matter which variable is measured on the abscissa.

Biology
Is SW USA a polar Region? I live in the SW… A.

BIOLOGY
Availability of food and vulnerability to predators. Natural mutations might make changes in phenotypes that help in dealing with the two factors above. Those would then tend to reproduce.

Middle School Math Help Please
Juice started out as a whole glass (1). Water = 1/6 + 1/3 + 1/2 = ?

Algebra
w = 30 - y 9.95w + 13.50y = 337.55 Substitute 30-y for w in second equation and solve for y. Insert that value into the first equation and solve for w. Check by inserting both values into the second equation.

Math
Subtract one equation from the other to eliminate the y. 11x = -11 Solve for x then y.

algebra
I don't understand why 100x is negative. Wouldn't commission for sales be positive? If he sells no computers, x = 0.

Statistics
See previous post.

Statistics
If you are comparing two means, you need to have the SEm, which requires knowledge of n. You do not supply that value. 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 ...

Science
Since this is not my area of expertise, I searched Google under the key words "thymus size fetal pig" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=thymus+size+fetal+pig&ie=UTF-8&oe=UTF-8 In the future, you can find the informati...

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

Math
each set? With replacement, the probability for red remains 6/15 = 2/5 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

Statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .8 * (1-.6) = .32

Statistics (?)
More data is needed for us to provide help.

stastistics
http://en.wikipedia.org/wiki/Student's_t-test

algebra (?)
No answers followed. Cannot copy and paste here.

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. If the events are independent, the probability of both/all events occurring is deter...

statistics
Expect the µ's to stay the same. The standard error of the mean (SEm) = SD/√n SEm would tend to get smaller as n increases.

Algebra 1
f = 2s + 6 s + f = 24 Substitute 2s+6 for s in second equation and solve for s. Insert that value into the first equation and solve for f. Check by inserting both values into the second equation.

Math
We cannot draw on these posts.

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

science
Also, please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you.

Science
I agree.

stats (?)
since you cannot copy and paste, we do not have the ANOVA. Even if we did, what is you question?

Math
Multiply top equation by 3 and then add the equations. 3x + 6y = 15 -3x + 6y = 15 12y = 30 You can take it from this point.

math (second Anon.)
First, if you are a different anonymous and have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Second, we do not do your homework for you. ...

math (first Anon.) (?)
Choices not given. You cannot copy and paste here.

math
Since this is not my area of expertise, I searched Google under the key words "business math to evaluate investments" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=business+math+to+evaluate+investments&ie=UTF-8&oe=UTF-8 In the fu...

biology
Since this is not my area of expertise, I searched Google under the key words "hypertonic" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=hypertonic&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more qui...

biology
See your later post.

math (?)
You have two unknowns. Without more data, it cannot be solved.

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

maths (?)
Again you are unclear. Are you choosing from the selected cards or the remainder of the deck? If of the 7 cards removed, red card is 2/7. neither king nor queen = 5/7 I'll let you do the rest.

maths
I'm not sure what "it" refers to. As long as the choice is random, there are 15 odd cards of the 30. 15/30 = ?

Statistics
Sampling with replacement puts the chosen unit back in the pool, while without replacement does not. Probabilities remain the same with replacement, but both numerator and denominator are reduced by one in without replacement in subsequent choices.

Math
3s + 4j = 360 s + 3j = 220 Multiply second equation by 3, then subtract first from second. 3s + 9j = 660 5j = 300 Solve for j, then insert that value into either equation to find s.

Ethics
Intrinsic goods are valued in themselves rather than leading to some other goods. http://www.diffen.com/difference/Ethics_vs_Morals

Math
1.3-2.5x ≤ -1.2x-0.52 Add .52 and 2.5x to both sides. 1.3 + .52 ≤ -1.2x + 2.5x 1.82 ≤ 1.3x Divide both sides by 1.3. 1.4 ≤ x or x ≥ .14

Statistics
Why are you substituting 5 for =? 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 (.025 because it is two-tailed) and its Z score. Insert Z first as positiv...

physics (?) needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. https://www.google.com/search?client=safari&rls=en&q=appropriate+outlet+box&ie=UTF-8&oe=UTF-8

Math 7
Cannot be solved unless you have some indication of relation of A or b to the height (20). A = 10b

Math
Change to common denominator (70). 35/70 + 40/70p > 91/70 40/70p > 56/70 p > 56/40

math 3 (?)
What is your question?

Math
You are more likely to get help, if you included specific problems from that unit.

math
Since half of the isosceles would a right triangle, use the Pythagorean theorem with 1/2 value of the base. 4^2 + altitude^2 = 5^2 Solve for the altitude.

Statistics
Need to ask questions first to get more details. Was the sample random? Was it large enough? Was the spread statistically significant? Was the way the question was stated biased?

Statistics
http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf

math (?)
Need to print data. Copy and paste do not work.

statistics for managers
We have no knowledge of your departments.

Algebra
Let a and B represent the respective hours worked. 10A + 7.5B > 300

algebra
10x+25(x+2)+5*5(x+2)= 400 10x + 25x +50 + 25x + 50 = 400 55x = 300 x = 300/55 = 5.45 I found one mistake in you equation above (bold), but that still does come out right. Do you have any typos?

english (?)
No following words. Cannot copy and paste.

algebra (?)
You need to compete the problem. Cannot copy and paste.

SCIENCE (?)
What are your choices? person? free thinker?

math
Same process as previous post.

math
1/3 * 3/4 = ? Canot draw on these posts.

Math
It can also include 8.601, 8.602, etc.

Math
Are you talking about 8.611, 8.612, 8.613, etc.?

Math (?)
No kite shown. cannot copy and paste.

Algebra
(64º - 40º)/8 = ?º

Algebra (?)
Problem 1?

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. a. 2 * -9 = -9 + -9 = -18 d. 7 * 0 = 0 Use process in a to solve b and c.

Statistics
Is Z = +1 the same as the mean? That should give you the answer.

STATS
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 (.025) related to the Z score. Insert Z and other values into above equation.

math 3
P(red) = 2/(4+2+6) = ? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(red) * P(red) = ?

math (?)
How many hour does she work? If typical, that would be 40.

statistics, math, college
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 (.02) and its Z score. Insert Z score and other data in above equation and solve.

math-fractions
I don't see where you need to use fractions to find the total. 9 + 6 = 15

algebra 1
I'm not sure what you are asking. 50 < 3d+5 < 89

Behavioral Statistics
Ho: mean = 40,000 H1: mean > 40,000 Z = (score-mean)/SEm SEm = SD/√n Since you are only concerned with greater than 40,000, you will reject Ho if Z falls in the top 5%. Find table in the back of your statistics text labeled something like "areas under normal dist...

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 5. wrong, 5^-3 = 1/5^3 6 & 7 are right.

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. I am also not sure what you are asking. 2/3 * 4/5 * m = 1/3 8/15 * m = 1/3 m = 1/3 * 15/8 = 15/24 = 5/8

Math
44.14/4 = ?

statistics (?)
What is your question?

Math
3 3/4 = 15/4 15/4 * 2/3 = ?

Science
We have no knowledge about your house or the fungi in it.

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. As answered to your later post, we don't know about your house.

maths
It would help if you proofread your questions before you posted them. "11/2"?

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