Tuesday
September 27, 2016

Posts by PsyDAG

Total # Posts: 22,379

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).
April 27, 2016

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?
April 27, 2016

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 = ?
April 27, 2016

prealgebra
You are welcome.
April 27, 2016

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.
April 27, 2016

Math
Doesn't a plus sign (+) tell you to add? m^2 - 9
April 27, 2016

math
1.25/20 = x/6 Solve for x.
April 27, 2016

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.
April 27, 2016

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?
April 27, 2016

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...
April 27, 2016

Math-probabilities
13,100/312,000,000 = ?
April 26, 2016

Math (???)
You assume that we know the grading scale for your class. Wrong assumption.
April 26, 2016

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.
April 26, 2016

math
When multiplying terms, you add the exponents.
April 26, 2016

math
20/6 = 3 1/3 cases needed. Given that, how many extra packs will she have?
April 26, 2016

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.
April 26, 2016

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 ...
April 26, 2016

Biology
Right
April 26, 2016

Math
What if it wasn't cut into 8 pieces? 6/19 = ?
April 26, 2016

Mathematics
Still need more data.
April 26, 2016

Mathematics
Need More data. Base?
April 26, 2016

Healthcare Statistics
t with 18 df at .05 = 2.101 What does that tell you?
April 25, 2016

Math
Need data. What facts beside those two numbers do you have?
April 25, 2016

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?
April 25, 2016

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
April 25, 2016

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.
April 25, 2016

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.
April 25, 2016

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
April 25, 2016

maths
Add the two equations to give you: 2/x = 6 Solve for x, then y.
April 25, 2016

English (?)
How is this English?
April 25, 2016

math
60*2 + 15 - 45 - 35 = ?
April 25, 2016

Science
Moon gravity is only .17 that of earth.
April 25, 2016

math (?)
What do the dimensions stand for? length? width? Depth?
April 24, 2016

Algebra
Disagree.
April 24, 2016

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.
April 24, 2016

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 = ?
April 24, 2016

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.
April 24, 2016

mathslit accounting life science tourism
Consult your school counselor, who can estimate your abilities and interests and the careers they correspond to.
April 24, 2016

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.
April 24, 2016

statistics
4/5^17
April 24, 2016

Science
Something that allows a current to flow through it. A person who leads an orchestra.
April 24, 2016

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.
April 23, 2016

Math
Put the value to zero for each one in the equation.
April 23, 2016

Math
Good!
April 23, 2016

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...
April 23, 2016

science (?)
What is your question?
April 22, 2016

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 ...
April 22, 2016

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 ...
April 22, 2016

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.
April 22, 2016

math (?)
You do not indicate how length is related to either width or height or the volume.
April 22, 2016

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 ($).
April 21, 2016

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.
April 21, 2016

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.
April 21, 2016

STAT
99% = mean ± Z (SEm) SEm = SD/√n Z for ±.005 = 2.575 Calculate.
April 21, 2016

mathematics
Lacking data. What is its shape?
April 21, 2016

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.
April 21, 2016

Stat HW for.
1b. 1/4 = .25 Probability of both found by multiplying individual probabilities. E. .5 * (1-.25) = ?
April 21, 2016

Statistics
Z = (mean-mean)/SEm SEm = SD/sqrt n Use table in back of text labeled area under normal distribution.
April 21, 2016

Statistical concept 68-95-99.7
Don't repeat posts. It wastes our time responding to them. See your later post.
April 21, 2016

Maths!
Lacking data. How many colors/marbles?
April 21, 2016

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.
April 21, 2016

3rd grade math
Yes
April 20, 2016

MATH
A more exact answer to cups = 5/(5+1+3+2) = 5 /11 = .45
April 20, 2016

MATH
3/(6+1+2+3) = ?
April 20, 2016

MATH!
Boys< 30-16
April 20, 2016

MATH
Without the outlier, the mean (which functions as a balance point) would be lower.
April 20, 2016

math
2/5 * 150 = ?
April 20, 2016

Math
54/(7+2) = 6 Multiply the 7 and 2 by 6.
April 20, 2016

Math
See your later post.
April 20, 2016

Math
Second and third choices are correct. The correlation would only show straight line if there was perfect predictability (+1.00) for the positive trend.
April 20, 2016

math
2 * 3= ? 10 * 15 = ?
April 20, 2016

stats
Z = (52-50)/SEm SEm = SD/sqrt n Look up Z in table in back of your text labeled area under normal distribution.
April 20, 2016

math
Why do you divide the width by 4? Is That because the length is 1/4W?
April 20, 2016

math
You do not state relationship between width and length.
April 20, 2016

Maths
What is your question?
April 20, 2016

Math
Probability of 2 or more independent events occurring is found by multiplying the individual events Assuming replacement, P(both) = .08 * .08 At least one = one or two. Either-or probabilities are found by adding the individual probabilities. P(one) = .08 * .92 P(both) shown ...
April 19, 2016

math
Let X = tens and y = twenties X = 7 - y 10 X + 20 y = 100 Substitute 7-y for X in the second equation and solve for y, then use first equation to find x.
April 19, 2016

math help pls pls pls
0 no correlation
April 19, 2016

math
5/(30+12+5)=?
April 19, 2016

MaThS LITERACY; GEOGRAPHY;TOURISM AND ECONOMIC
Consult with your school counselor,who can help you estimate your interests and abilities and the occupations they relate to.
April 19, 2016

Algebra
P.S. It is better to indicate specific topic in subject space to get a tutor who knows the subject. You lucked out this time.
April 19, 2016

School
B = 3C 2B + 4C = 30 Substitute 3C for B in the second equation to solve for C, then insert value in the first equation to find B.
April 19, 2016

math
(1-.10)X = 36 Solve for x.
April 19, 2016

math
2*24*2 minutes less.
April 19, 2016

Math
Cannot drag on these posts.
April 18, 2016

math
1/2 + 1/6 = 6/12 + 2/12 = 8/12 = 2/3 Neither do I. Probably a typo in the answer key.
April 18, 2016

Maths
(4 * 2) +1 = 9
April 18, 2016

Math needs help
Indicate specific topic so tutor with the right knowledge will respond.
April 18, 2016

Math
(12 - 7)/12 = ?
April 18, 2016

English
What is your question?
April 18, 2016

English
Either
April 17, 2016

Bio
Haploid
April 17, 2016

Scince
What are your choices?
April 17, 2016

maths littercy ,agricultural science ,life science ,tourism , life orientatiom, ndebele and english
Consult your school counselor, who can help you assess your abilities and interests along with recommending schools that will fit your needs.
April 17, 2016

stats
No data set. You can't copy and paste here.
April 17, 2016

history,maths literacey,english,xitsonga,religion,
Contact your school counselor.
April 17, 2016

Statistic
What is your question?
April 17, 2016

dramatic art .tourism. history and math lit
Contact your school counselor with this question.
April 17, 2016

Elementary Statistics
Z = (score-mean)/SEm SEm = SD/sqrt n Use same table.
April 16, 2016

Algebra
Let X = initiation fee X + 18m = 3950 X + 7m = 3125 Subtract second equation from first to solve for m. Insert value into either equation to solve for X.
April 16, 2016

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