Monday
September 1, 2014

Posts by PsyDAG


Total # Posts: 18,033

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 ...
February 17, 2014

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 ...
February 17, 2014

biology
See your later post.
February 16, 2014

math (?)
You have two unknowns. Without more data, it cannot be solved.
February 16, 2014

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 16, 2014

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.
February 16, 2014

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 = ?
February 16, 2014

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.
February 16, 2014

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.
February 16, 2014

Ethics
Intrinsic goods are valued in themselves rather than leading to some other goods. http://www.diffen.com/difference/Ethics_vs_Morals
February 14, 2014

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
February 14, 2014

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 ...
February 14, 2014

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
February 13, 2014

Math 7
Cannot be solved unless you have some indication of relation of A or b to the height (20). A = 10b
February 13, 2014

Math
Change to common denominator (70). 35/70 + 40/70p > 91/70 40/70p > 56/70 p > 56/40
February 13, 2014

math 3 (?)
What is your question?
February 13, 2014

Math
You are more likely to get help, if you included specific problems from that unit.
February 13, 2014

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.
February 13, 2014

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?
February 13, 2014

Statistics
http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf
February 13, 2014

math (?)
Need to print data. Copy and paste do not work.
February 13, 2014

statistics for managers
We have no knowledge of your departments.
February 12, 2014

Algebra
Let a and B represent the respective hours worked. 10A + 7.5B > 300
February 12, 2014

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?
February 12, 2014

english (?)
No following words. Cannot copy and paste.
February 12, 2014

algebra (?)
You need to compete the problem. Cannot copy and paste.
February 12, 2014

SCIENCE (?)
What are your choices? person? free thinker?
February 12, 2014

math
Same process as previous post.
February 11, 2014

math
1/3 * 3/4 = ? Canot draw on these posts.
February 11, 2014

Math
It can also include 8.601, 8.602, etc.
February 11, 2014

Math
Are you talking about 8.611, 8.612, 8.613, etc.?
February 11, 2014

Math (?)
No kite shown. cannot copy and paste.
February 11, 2014

Algebra
(64º - 40º)/8 = ?º
February 11, 2014

Algebra (?)
Problem 1?
February 11, 2014

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.
February 11, 2014

Statistics
Is Z = +1 the same as the mean? That should give you the answer.
February 11, 2014

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.
February 11, 2014

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) = ?
February 11, 2014

math (?)
How many hour does she work? If typical, that would be 40.
February 11, 2014

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.
February 11, 2014

math-fractions
I don't see where you need to use fractions to find the total. 9 + 6 = 15
February 11, 2014

algebra 1
I'm not sure what you are asking. 50 < 3d+5 < 89
February 11, 2014

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 ...
February 10, 2014

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.
February 10, 2014

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
February 10, 2014

Math
44.14/4 = ?
February 10, 2014

statistics (?)
What is your question?
February 10, 2014

Math
3 3/4 = 15/4 15/4 * 2/3 = ?
February 10, 2014

Science
We have no knowledge about your house or the fungi in it.
February 10, 2014

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.
February 10, 2014

maths
It would help if you proofread your questions before you posted them. "11/2"?
February 10, 2014

Math (?)
What is your question?
February 10, 2014

math
Here is the process. It doesn't fit with the above answer. m = j + 17 m + j = 49 Substitute j+17 for m in second equation and solve for j. Insert that value into the first equation and solve for m. Check by inserting both values into the second equation.
February 10, 2014

Algebra
a. Best = y = 40 + .10x A+ = y = 35 + .20x b. Calculate y when x = 500. c. 40 + .10x = 35 + .20x Solve for x.
February 10, 2014

Algebra
Substitute the value for x and solve the equation for S. S = 50(14) + 450 = 700 + 450 = 1150 Do the same for the other values.
February 10, 2014

Math
3.3 - 5(.2) = ?
February 10, 2014

STATS
Yes
February 10, 2014

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.45) and its Z score. Insert the Z value in your equation and solve for x.
February 10, 2014

Research and Statistics
What does it mean? https://www.google.com/search?client=safari&rls=en&q=truncated+range+statistics&ie=UTF-8&oe=UTF-8
February 10, 2014

statistics
No, since the value is above the mean, it would be less than 50%. 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.
February 10, 2014

Statistics (?)
What is question 19? You cannot use copy and paste here.
February 10, 2014

Statistics in Psychology
A correlation coefficient cannot exceed ± 1. From your data, neither would be useful.
February 10, 2014

Statistics in Psychology
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 previous post.
February 10, 2014

statistics
Z = (score-mean)/SD Solve for Z.
February 10, 2014

Statistics
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find...
February 10, 2014

statistics
Z = (score-mean)/SD
February 10, 2014

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.
February 10, 2014

Statistics
a. 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 b. Z = (score-mean)/SD...
February 10, 2014

algebra 2
Since there is a plus sign between the two parentheses, add the like terms. 2b^2 + b^2 = 3b^2 -b + 4b = 3b 3b^2 + 3b - 4
February 10, 2014

physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 10, 2014

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.
February 10, 2014

STATISTICS
Find a relatively large group of students, get their IQ and grade average, and do a correlation coefficient. To know the value of either variable, use a scatter diagram to find the other.
February 10, 2014

Math (?)
What is your question?
February 9, 2014

Math
(4+x)/(3+4+7+10+x) = 1/4 Solve for x.
February 9, 2014

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.
February 9, 2014

Research and Statistics
Null hypothesis assumes no difference, while the alternative assumes some difference. Ho: x = y Ha: x ≠ y
February 9, 2014

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.
February 9, 2014

Math Help
It would help if you proofread your questions before you posted them. 1. Where is the = sign? 2. Change to common denominator. 20/24x + 6/24 = -54/24 20/24x = -60/24 Would that give you -2?
February 9, 2014

Data apps and healthcare statistics
Since this is not my area of expertise, I searched Google under the key words "information systems healthcare delivery" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=information+systems+healthcare+delivery&ie=UTF-8&oe=UTF-8 In ...
February 9, 2014

Algebra 1
(1-.30)x = 300 Solve for x.
February 9, 2014

math
I assume you mean 1 3/4 to get 75%.
February 8, 2014

Stats
They are all right.
February 8, 2014

Stats
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) = ?
February 8, 2014

Algebra
(8310-3320)/10 = ?
February 8, 2014

science (Partial)
2. gas, solid, liquid 3. It seeks the lowest level. 5. The water particles move so fast that they escape the liquid and become a gas. Foreign particles are deposited out.
February 8, 2014

physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 7, 2014

math needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 7, 2014

Statistics
If you are talking "P(X)", isn't that probability?
February 7, 2014

Math
Factor. (x+3)(x+3) = 0 x = -3
February 7, 2014

Algebra
f(10) = 10^3 = 1000
February 7, 2014

Statistics
False False True
February 7, 2014

math (?)
What is your question?
February 7, 2014

Math
Q1. Find the total, then divide each category by the total. Express as percentage. Q2. 1.85 * Total = ?
February 6, 2014

math
y = 8x In each case, substitute ticket number for x and solve for y.
February 6, 2014

statistics (?)
Data lacking. What are the mean, standard deviation and n for the sample?
February 6, 2014

math(?)
More data needed.
February 6, 2014

math
a. 7.25 * 8 * 5 * 52 = x b. x * 8 * 5 * 52 = 13,800,000 In both cases, solve for x and express in terms of dollars.
February 6, 2014

math
9/12(25) + 24.7/56(145) + 6.2/13.1(95) = total time in minutes Add total time to 9:03.
February 6, 2014

math
Both include all values <3.
February 6, 2014

Human Relations Part 1
Opposite Look up the terms online or in a dictionary.
February 6, 2014

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