Tuesday

September 23, 2014

September 23, 2014

Total # Posts: 18,275

**statistics**

A parameter is data about the whole population, while a statistic deals with a part of the population, a sample. What does that tell you?
*November 26, 2013*

**Biology**

It's possible, but what type of genes are going to be inserted? Who will determine who will get what genes? As with medicine, will there be unintended side effects? That should give you a start.
*November 26, 2013*

**communicate**

This is asking for your response to an unknown artifact. Our psychic abilities are limited or nonexistent.
*November 25, 2013*

**statistics psy/315**

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 "...
*November 25, 2013*

**math (?)**

No information above. Original price of chair missing.
*November 25, 2013*

**math (?)**

Data missing. A parameter is a measure on the total population, while a statistic is a measure on a portion of the population.
*November 24, 2013*

**statistics**

A normal distribution approximates a bell-shaped curve. Outliers to one side would skew the distribution. If the distribution was flat, having about the same frequencies throughout the distribution, this would be non-normal. Also a bimodal distribution would be non-normal, ...
*November 24, 2013*

**Statistics**

% = mean ± Z(SEm) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (%/2) from the mean and its Z score. Substitute values into above equation and calculate. If you ...
*November 24, 2013*

**statistics**

right.
*November 24, 2013*

**math (?)**

What is your question?
*November 24, 2013*

**pre-algebra (?)**

What model?
*November 24, 2013*

**science**

Since this is not my area of expertise, I searched Google under the key words "Lamarck vs. Darwin differences" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=lamarck+vs+darwin+differences&ie=UTF-8&oe=UTF-8 In the future, you can ...
*November 24, 2013*

**statistics (?)**

What following? 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. This may help you decide.
*November 24, 2013*

**Math**

I am assuming the Eric is ON the train. 24/3 = 8 ft./sec. 8 + 80 = ?
*November 23, 2013*

**Science**

I would assume so. 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.
*November 23, 2013*

**algebra 2**

Except for multiplying/dividing by a negative number, treat just like an equation. First get rid of the parentheses by multiplying. 2x - 10 > 6x -18 Subtract 2x from both sides and add 18 to both sides. You should be able to work it from there.
*November 23, 2013*

**medical needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*November 22, 2013*

**statistics**

Cannot sketch on these posts. 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 related to the Z scores.
*November 22, 2013*

**science**

What type of mutations are you referring to? Dominant? Recessive? Other?
*November 22, 2013*

**science**

1. B 2. B
*November 22, 2013*

**statistics (?)**

Where is your data?
*November 21, 2013*

**math (?)**

Powers not shown.
*November 21, 2013*

**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 "...
*November 21, 2013*

**Statistics**

Right
*November 21, 2013*

**College Algebra (?)**

What line? Graphics cannot be posted.
*November 21, 2013*

**stastistics**

Null hypotheses propose no effect.
*November 21, 2013*

**College Algebra**

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.
*November 21, 2013*

**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. I answered this before. Carriers have the recessive gene in their genotype, ...
*November 21, 2013*

**Statistics**

% = 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 ([1-%]/2) to find the Z score. Insert that into ? position. Example: 95% = 74.8 &...
*November 21, 2013*

**Statistics**

% = mean ± ? SEm Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability ([1-%]/2) and its Z score. Enter Z score for ?. Solve for intervals.
*November 21, 2013*

**Statistics**

A null hypothesis expects no difference.
*November 21, 2013*

**Algebra 1**

72 + 4(12-6) = ?
*November 20, 2013*

**biology**

Since this is not my area of expertise, I searched Google under the key words "atom structure picture" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=atom+structure+picture&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*November 20, 2013*

**math(check answers please)**

1. B 2. A 3. 3f + 2f = 5f
*November 20, 2013*

**Math**

1, 2. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3. 8 lots total. With each selection, there is one less large lot and one less total. 6/8 * 5/7 * 4/6 = ? 4. 6/15 * 5/14 = ?
*November 20, 2013*

**Psy/355**

I searched Google under the key words "motivation" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=motivation&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly, if you use appropriate key words ...
*November 20, 2013*

**Statistics**

The smallest is most significant.
*November 20, 2013*

**physical (?)**

What statements?
*November 20, 2013*

**Math/Science**

(58.7 * 10^16)/(9.3 * 10^4) = ? seconds To convert to hours, multiply by 360. For days, multiply again by 24. For years, multiply again by 365. for centuries, multiply again by 100.
*November 19, 2013*

**science**

Not sure what this statement means. The light from the sun gets stronger at sunrise and weaker at sunset, but the radiation from the sun is about the same under both conditions.
*November 19, 2013*

**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. See your later post.
*November 19, 2013*

**Statistics**

Ho: Smpking does not effect the period of gestation. Generalize from the above to other null hypotheses.
*November 19, 2013*

**math (?)**

What are your choices?
*November 18, 2013*

**Science**

To carry the disease means that it is in the genotype but not the phenotype. That would happen with a recessive gene. It will occur.
*November 18, 2013*

**Math (?)**

We cannot view graphs on these posts.
*November 18, 2013*

**Math**

Please, where is the specific question?
*November 18, 2013*

**math**

5 + 4.75 + 2.25 = ? Convert to feet and inches.
*November 18, 2013*

**algebra**

Subtract 3x from both sides, then divide both sides by 6.
*November 18, 2013*

**math**

1.483.56 has 6 significant figures.
*November 18, 2013*

**algebra**

A square has all sides of equal length. You do not have a square. For a rectangle, 2[(4x+3)+3(2x - 5)] = ?
*November 18, 2013*

**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.
*November 18, 2013*

**math**

$14,260/24 = $594.17 19.63/594.17 = ?
*November 18, 2013*

**statistics (?)**

What is your question?
*November 18, 2013*

**Math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. How did you get zero? In all = 9 * 3 = ? Twice = 2 times 9 * 2 = 18
*November 18, 2013*

**Math**

Right. See later post for second problem. 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.
*November 18, 2013*

**Math**

All correct except 3. Each basket in basketball counts as two points. Also, online “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.
*November 18, 2013*

**statistica**

Conclude H1 at the 5% level of significance, since it is a one-tailed test and it is well beyond the 90% confidence limits.
*November 17, 2013*

**stats**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
*November 17, 2013*

**Statistics**

a, b. No inferences being made. c. There is no data for other nights, so this is an inference.
*November 16, 2013*

**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. See your later post.
*November 16, 2013*

**Math**

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.
*November 16, 2013*

**science10**

To get help, you need to post specific questions.
*November 16, 2013*

**Statistics**

Proportion = # in category/total number
*November 16, 2013*

**Statistics**

When you have specific data, it is descriptive. When you go outside the actual data, it is inferential. 1. a, b and c infer. 2. a describes, b and c infer.
*November 14, 2013*

**Math Statistics**

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 related to the Z scores. Reverse process with last question, starting with .90.
*November 14, 2013*

**science**

coitus, genes, traits?
*November 13, 2013*

**science**

Was the girl cloned? Otherwise it is not exact.
*November 13, 2013*

**maths**

100 cm = 1 m 60/100 = ?
*November 13, 2013*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability ([1-.87]/2) and its Z score. 87% = mean ± Z(SD) Fill in the values and calculate.
*November 13, 2013*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability ([1-.99]/2) and its Z score. 99% = mean ± Z(SEm) SEm = SD/√n
*November 13, 2013*

**Math**

Area = 1/2 height*base Assuming that the above are height and base, 170 * 800 = 136,00 sq. feet 1 acre - 43,560 sq. feet 136,000/43,560 = ?
*November 12, 2013*

**math**

a. 5.24 * 2 = ? billion b. 5.24 * 4 = ? c. 5.24 * 8 = ?
*November 12, 2013*

**Statistics**

http://www.chegg.com/homework-help/definitions/type-i-and-type-ii-errors-31
*November 11, 2013*

**Statistics**

See Previous post.
*November 11, 2013*

**Statistics (Ooops)**

Excuse me. Is .05 > P > .01? Again, we don’t know.
*November 11, 2013*

**Statistics**

C. Is the .05 > Alpha > .01? We don’t know.
*November 11, 2013*

**math (?)**

I don’t know how you define “1 block.” Jane’s amount factors into 15 * 5, therefore Peter would factor to 15 * 2 = 30. Is that what you mean by “1 block”?
*November 11, 2013*

**Math (?)**

Each person received 7/4 pounds. 2(7/4) were given to food pantry. It would help if you proofread your questions before you posted them. You seem to be missing a unit designation for the apple sauce. 1 2/3 what?
*November 10, 2013*

**HR (?)**

What Human Relations function did you choose?
*November 10, 2013*

**math**

Find the mean first = sum of scores/number of scores. Range = highest score - lowest score. 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 ...
*November 10, 2013*

**Science**

I would agree with D.
*November 10, 2013*

**statistics**

P is less than OR equal (≤) .01, which leads me to believe that taking aspirin reduces mortality.
*November 9, 2013*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "proton pump input output" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=proton+pump+input+output&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*November 9, 2013*

**statistics**

a) 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. Do you consider it appropriate? b) It would help if you proofread your questions ...
*November 9, 2013*

**statistics**

Percent = mean ± ? SEm Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to one-half of the desired percentages to find the Z score and its distance from the ...
*November 9, 2013*

**Statistics**

99% = mean ± 2.575 SEm SEm = SD/√n
*November 9, 2013*

**Statistics**

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 your Z score.
*November 9, 2013*

**Statistics**

95% = mean ± 1.96 SEm SEm = SD/√n
*November 9, 2013*

**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 "...
*November 9, 2013*

**science**

As the distance increases, the gravitational forces between the two objects decreases. It is an inverse relationship. This means the statement is true.
*November 8, 2013*

**Math (Ooops)**

Sorry, I goofed. Mia Culpa!
*November 8, 2013*

**Math**

Steve seems to be ignoring that you might pick 4 socks of the same color in a row.
*November 8, 2013*

**Math**

First the choice of one color = 4/8. With the 7 remaining socks, the choice of the other color = 4/7. With 3 remaining of each color in the 6 socks left, P = 3/6. If the events are independent, the probability of both/all events occurring is determined by multiplying the ...
*November 8, 2013*

**science**

Since the sound has to travel in both directions: 340 * 5.2/2 = ?
*November 7, 2013*

**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. See your previous post.
*November 7, 2013*

**MATH**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a) (1-.05)(1-.21) = ? b) .05(1-.21) = ? c) Follow same process. d) This is saying that either h or k will qualify. Either-or ...
*November 7, 2013*

**Math**

From your set of numbers, there is no mode or modal class. If the scores were grouped into intervals, one could be the modal class. The mean or median would be better to indicate average class sizes. Any of the measures of central tendency can be used, if the distribution is ...
*November 7, 2013*

**spanish (Ooops!)**

I'm sorry that I misinterpreted, since in los Estados Unidos, we us the period to indicate less that one. What you want is: quinientos treinta miles
*November 6, 2013*

**spanish**

quinientas treinta
*November 6, 2013*

**statistic (?)**

What is your question?
*November 6, 2013*

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