Tuesday

September 2, 2014

September 2, 2014

Total # Posts: 18,038

**Healthcare Statistic**

Accepting Ho when it is actually false.
*December 7, 2013*

**Healthcare Statistic**

Rejecting Ho when it is actually true.
*December 7, 2013*

**Healthcare Statistic**

The smallest value.
*December 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 later post. Again, what are the total number of plants?
*December 7, 2013*

**math**

See previous post.
*December 7, 2013*

**psych**

I searched Google under the key words "biological and social influences of temperament" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=biological+and+social+influences+of+temperament&ie=UTF-8&oe=UTF-8 In the future, you can find ...
*December 6, 2013*

**Statistic**

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 95% = mean ± 1.96 ...
*December 6, 2013*

**5th grade science**

There are two criteria for your answer. What is a nonmetal? What is not an electrical conductor? What is left?
*December 6, 2013*

**statistics**

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 95% = mean ± 1.96 ...
*December 6, 2013*

**science (?)**

What are your choices?
*December 6, 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. See your later post.
*December 6, 2013*

**Intermediate FT**

Multiply equation by x. 3 + 4 + 2x = 2x Equation has no solution.
*December 6, 2013*

**Statistics**

From your limited data, there is no variability measure for t-test. I wouldn't even know how to figure the mean. You might want to use chi-square test for whatever you are hypothesizing. To use the Chi-square (X^2) method: X^2 = ∑ (O-E)^2/E, where O = observed ...
*December 6, 2013*

**math**

Do you have a calendar? Count the days.
*December 6, 2013*

**Science**

Since this is not my area of expertise, I searched Google under the key words "nutrient definition" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nutrient+definition&ie=UTF-8&oe=UTF-8 In the future, you can find the information ...
*December 6, 2013*

**math?**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. With three unknowns, you need more data.
*December 6, 2013*

**Statistics**

This is a little clearer. The larger portion (body) for positive Z scores is to the left. For negative Z scores, it is to the right. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/...
*December 6, 2013*

**Statistics**

We cannot draw on these posts. The Z score is your score in terms of standard deviations from the mean. There would be a tail on both sides. Are you looking for the smaller portion? https://www.google.com/search?client=safari&rls=en&q=normal+distribution+standard+deviation&ie=...
*December 6, 2013*

**math (?)**

No problem at the bottom.
*December 5, 2013*

**Biology**

It used to be phenotypes, but if genomes are available, it could be either.
*December 5, 2013*

**psychology**

Since typically children do not have as many resources to deal with these conditions, I would assume their conditions are likely to be more severe and long-lasting.
*December 5, 2013*

**Statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability [(1-.95)/2] = Z = 1.96. You divide by 2, because you are considering both above and below. 95% = mean ± 1.96 SEm The ...
*December 5, 2013*

**Science need help**

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. 5 and 6.
*December 5, 2013*

**Statistics**

Next time, give your response, so we can evaluate it. True
*December 5, 2013*

**Statistics**

True
*December 5, 2013*

**Statistics**

True
*December 5, 2013*

**Biology**

I'm not sure exactly what you are asking. In psychology, positive control (or at least an attempt at it) involves incentives and rewards. Negative aspects involve punishment or lack/removal of reward. If this is what you are seeking, you should be able to think of examples.
*December 4, 2013*

**Algebra**

You got them all correct.
*December 4, 2013*

**Math**

Multiply first equation by 2. Assuming that y was accidentally eliminated in the second equation. 4x - 10y = 6 -4x + 10y = -6 Adding the two together: 0 = 0. One equation is just the negative of the other. In other words, if you multiply one equation by -1, you get the other.
*December 4, 2013*

**Statistics (?)**

What is your question?
*December 3, 2013*

**Science (?)**

What type of wave?
*December 3, 2013*

**math**

4/5 + 4/5 = ?
*December 3, 2013*

**math**

3/5 * 10 = ?
*December 3, 2013*

**math**

1/2 * 1/3 = ?
*December 3, 2013*

**math**

3 * 4 = ?
*December 3, 2013*

**statistics (?)**

What is your question? If you want to know Kelsey's score: Z = (score-mean)/SD -1.85 = (score-72)/4
*December 3, 2013*

**statistics**

(100*10)/(7*60) = ?
*December 3, 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.
*December 2, 2013*

**Algebra!**

(1) Let x = standard shipments and y = express. y = 108 - x 3.5x + 7.5y = 506 Substitute 108-x for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation. (2) Use similar process ...
*December 2, 2013*

**science**

I assume you only need to determine the sex chromosomes. The daughter has XX sex chromosomes. Since she has hemophilia, a recessive gene on the X chromosome, she must have inherited the hemophilia from both parents. However, since the son also receives an X chromosome from mom...
*December 2, 2013*

**Statistic**

See your previous post.
*December 2, 2013*

**Statistic**

62,400/(100*#workdays in a year) = ?
*December 2, 2013*

**Statistics**

You might want to round it to the nearest person. It rounds to 17, but if you want all the records to be covered, you might round it up to 18. This would give the FTEs a little slack.
*December 2, 2013*

**Statistics**

8600/(100*5) = ?
*December 2, 2013*

**biology**

The girls all receive normal X chromosome from dad, meaning they cannot be more than carriers. If males get recessive gene, they will have hemophilia since there is no dominant gene on the Y chromosome to supress the hemophilia gene. How do you get six variations? XCXC, XcY ...
*December 2, 2013*

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Assuming the comma has the same meaning as a period in the USA: 2.3 * -5 = -11.5
*December 1, 2013*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 13/52 * 12/51 * 11/50 * 10/49 * (13*3)/48 = ?
*December 1, 2013*

**Statistics 2**

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. A
*December 1, 2013*

**Math**

1600 + 17600*.081 + (29700-17600)*.09 = ?
*December 1, 2013*

**algebra 1**

With answer from B, Mean(for median) = (B + ?)/2 = 227
*December 1, 2013*

**algebra 1**

A. mean = ∑x/n = (225+245+222+230+x)/5 = 221 Solve for x. B. Arrange 5 score in order of value. Middle score is the median. C. With even number of scores, mean of the two middle scores = median
*December 1, 2013*

**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.
*December 1, 2013*

**Math.stat help :(**

Ho: mean1 = mean2 Ha: mean1 ≠ mean2 Since these are just samples rather than the whole population, µ is an inappropriate designation. µ is parameter rather than a statistic. Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(...
*November 30, 2013*

**statistics**

It is the Z test (google it). Where is your confusion centered?
*November 30, 2013*

**statistics**

Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n (n = # of trips) If only one SD is provided, you can use just that to determine SEdiff. Find table in the back of your statistics text labeled ...
*November 30, 2013*

**Health (Ms. Sue)**

1. They could view genetics as a boon or threat, which would influence their dealings greatly. What would do if you thought something was a boon… or a threat? 2. I would need to know first what the news reports actually say.
*November 29, 2013*

**Child development**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. I would say B.
*November 29, 2013*

**math**

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 29, 2013*

**biology**

https://www.google.com/search?client=safari&rls=en&q=DNA+RNA+polymerases+similarities&ie=UTF-8&oe=UTF-8
*November 29, 2013*

**biology**

Since this is not my area of expertise, I searched Google under the key words " bacterial vs. mammalian transcription" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=bacterial+vs.+mammalian+transcription&ie=UTF-8&oe=UTF-8 In the ...
*November 28, 2013*

**science**

Clouds of what? http://scienceline.ucsb.edu/getkey.php?key=884
*November 27, 2013*

**science**

The sun does not have an atmosphere or crust.
*November 27, 2013*

**maths**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. However, the sign is not needed, if a parenthesis is present. 2y(-28)=48 -56y = 48 y = 48/-56 Reduce.
*November 26, 2013*

**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*

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