Thursday

April 17, 2014

April 17, 2014

Number of results: 490

**graphing**

I put the numbers in using the stat function of the TI-83. I hit STAT and edit to put in the numbers in L1 and L2. Then I did Stat -Calc and I chose Quadreg and L1 L2 from keyboard and enter.
*Friday, February 22, 2013 at 12:29pm by JJ*

**Stat B**

How many standard deviations away from the mean do the quartiles lie in any normal distriubiton?
*Thursday, September 17, 2009 at 9:11pm by Stat B*

**statistics**

survey revealed two percent of students did not select stat. for biz. suppose we select a sample of 10 students. -what is the probability that 3 students selected stat. for biz? -how many students would you expect to select stat.for biz?
*Monday, March 8, 2010 at 10:47am by nora*

**Research and Statistics**

IQ | 1.0000 Psy | 0.5923 1.0000 Stat | 0.7367 0.7105 1.0000 a. corr(iq, psych) = 0.5923; coeff. of det. = 0.3508. b. corr(iq, stat) = 0.7367; coeff. of det. = 0.5576. c. corr(stat, psych) = 0.7105; coeff. of det. = 0.5048.
*Saturday, September 11, 2010 at 10:39am by Jenn*

**Statistics check**

Dependent Different xbar = -1.2 s = 5.17 n= 5 t = -1.2/(5.17/sqrt(5)) t = -0.52 p-value = 0.6310 To get p-value Stat oldest L1, youngest L2 difference between oldest and youngest L3 after quit and stat tests then T-test data List: L3
*Tuesday, June 25, 2013 at 8:00pm by Kuai *

**Math Help **

Suppose that each student in stat. has a 9% chance of missing class on any given day and that student attendance is independent. In a stat. class of 20 students, find the probability that: 1) no student is absent 2) one student is absent 3) three student is absent 4) at least ...
*Monday, April 8, 2013 at 12:44pm by Chris*

**Stat**

Remeber that it is areas under a density curve, not the height of the curve, that give proportions in a distribuiton. To illustrate this, sketch a density curve that has its peak at 0 on the horizontal axis but ahs greater area within .25 on either side of 1 than within .25 on...
*Monday, September 21, 2009 at 5:15pm by Stat*

**math help**

The probability of committing a type I error is the level of significance, α. See: http://www.cs.uni.edu/~campbell/stat/inf5.html
*Saturday, June 22, 2013 at 12:22am by MathMate*

**statistics**

(c) Z = -750/500 = -1.25 For the others, you need a normal distribution probability calculator or table. There are many online. There is a good one at http://www.stat.tamu.edu/~west/applets/normaldemo.html It says that the answer to (a) is 69.15%
*Sunday, April 24, 2011 at 6:56pm by drwls*

**Check answers please Statistics**

Suppose that each student in stat. has a 9% chance of missing class on any given day and that student attendance is independent. In a stat. class of 20 students, find the probability that: 1) no student is absent =15.16 2) one student is absent =30 3) three student is absent =...
*Monday, April 8, 2013 at 3:50pm by Chris*

**STATISTICA**

http://www.stat.wmich.edu/s216/book/node6.html
*Friday, June 10, 2011 at 11:39pm by TutorCat*

**Grade 12 life orientation**

This life style disease is to bad to other people. People who are infected, think that it is the end of the world, well infect is not true. But usually many people if they find out about you being affected they stat playin away from you. And that is not a great thing to do ...
*Thursday, April 19, 2012 at 2:40pm by Thapelo*

**stats**

N=30 http://www.milefoot.com/math/stat/ci-variances.htm
*Sunday, March 31, 2013 at 6:43pm by bobpursley*

**math**

The probability that a person has immunity to a particular disease is 0.3. Find the mean and standard deviation for the random variable x, the number of people who have immunity in samples of size 28. This is a binomial distribution. mean= 28*.3 standard deviation= sqrt (28*.3...
*Saturday, August 18, 2007 at 12:29pm by manny*

**chem**

http://www.stat.yale.edu/Courses/1997-98/101/confint.htm Scroll down about 1/2 the page.
*Wednesday, February 2, 2011 at 12:04am by DrBob222*

**adult education**

http://www.math.sfu.ca/~cschwarz/Stat-301/Handouts/node67.html This survey yields two outcomes: yes, and no. If a third response (I dont know,or maybe, or anything else, it is not a binomial distribution).
*Thursday, October 28, 2010 at 11:44am by bobpursley*

**Stat's**

Thank you
*Sunday, October 26, 2008 at 3:56pm by Valerie*

**Statistics**

thanks
*Saturday, August 17, 2013 at 8:39am by stat*

**science**

thanks
*Saturday, August 24, 2013 at 6:11am by stat*

**stat**

(6+2+1)/(6+2+1+8+3) = ?
*Monday, August 26, 2013 at 8:44pm by PsyDAG*

**Stat**

P = (1-.02)^4 = ?
*Sunday, April 3, 2011 at 8:14pm by PsyDAG*

**Stat**

dfb
*Sunday, April 3, 2011 at 8:14pm by dgv*

**STAT (incomplete)**

What are a, b, c, & d?
*Thursday, November 15, 2012 at 7:55pm by PsyDAG*

**STAT.**

0.4 37.6
*Tuesday, March 12, 2013 at 12:11pm by khudari*

**Stat**

kkj
*Monday, March 4, 2013 at 1:06am by jkj*

**stat**

Did anyone answer this?
*Tuesday, May 1, 2012 at 8:24am by Dean*

**STAT**

ab
*Thursday, November 15, 2012 at 7:59pm by Anonymous*

**stat**

32
*Friday, February 17, 2012 at 9:09pm by 324*

**stat**

What do you mean by "the body?"
*Sunday, December 19, 2010 at 11:35pm by drwls*

**prob and stat (?)**

What is your question?
*Sunday, October 30, 2011 at 9:24am by PsyDAG*

**STAT**

I forgot to mention.. for x 0,1,2
*Monday, April 30, 2012 at 11:59pm by Michelle*

**stat**

...is equal to a probability of 1.
*Monday, May 7, 2012 at 7:22pm by MathGuru*

**STAT (incomplete)**

What results?
*Thursday, November 15, 2012 at 7:56pm by PsyDAG*

**STAT (incomplete)**

In what case?
*Friday, November 23, 2012 at 4:55pm by PsyDAG*

**stat**

dont know
*Tuesday, January 11, 2011 at 12:57am by Aram Eshoyan*

**STAT**

Thanks Reiny. That really help.
*Saturday, October 12, 2013 at 9:26pm by Jacky*

**Statistics**

I-III mode:http://www.mathgoodies.com/lessons/vol8/mode.html midrange: http://en.wikipedia.org/wiki/Mid-range IV. Chebyshev's Theorem: http://www.statisticshowto.com/articles/how-to-calculate-chebyshevs-theorem/ You know the value of mean and standard deviation. Find the ...
*Friday, May 20, 2011 at 4:49pm by TutorCat*

**Stat**

The army reports that the distribution of head circumfererence among soldiers is approximately Normal with mean 22.8 inches and standard deviation 1.1 inches. Helmets are mass produced for all except the smallest 5 % and the largest 5 % of head sizes. soldiers in the smallest ...
*Monday, September 21, 2009 at 6:53pm by Stat (Alegra One Help I think)*

**trig**

hmmmm ok i\'ll try and see what i get thanks
*Sunday, September 6, 2009 at 5:06pm by stat*

**Stat B**

approximately 0.7 standard devia
*Thursday, September 17, 2009 at 9:11pm by drwls*

**Stat**

P(B|A) = (P(A and B))/(P(A)) = (.38)/(.45) = 0.84
*Monday, June 6, 2011 at 6:28pm by Anonymous*

**Prob/Stat**

If P(A) = .3 and P(B) = .4 and P(AandB) = .2 what is P(A/B)? P(B/A)? Are A and B indepentent?
*Sunday, April 1, 2012 at 8:44am by Sheila*

**STAT (incomplete)**

Again, in what case?
*Friday, November 23, 2012 at 4:58pm by PsyDAG*

**stat**

I got 42.95
*Tuesday, December 11, 2012 at 3:36am by christopher*

**math/prob stat**

Gucci
*Tuesday, March 30, 2010 at 8:42pm by Anonymous*

**STAT**

SEm = SD/√n
*Wednesday, April 3, 2013 at 11:46pm by PsyDAG*

**stat**

indices is plural for index.
*Thursday, September 26, 2013 at 3:13pm by Steve*

**Stat**

It is right-tailed Answer B
*Monday, November 4, 2013 at 2:36pm by Kuai*

**STAT-discrete random varaibles**

c
*Sunday, April 22, 2007 at 5:32am by cccc*

**Stat 1**

How can we do any calculation, if no specific data is given?
*Wednesday, October 20, 2010 at 1:49am by PsyDAG*

**Math(Stat)**

More data needed.
*Friday, November 25, 2011 at 10:38pm by PsyDAG*

**stat (incomplete)**

We do not have access to your data.
*Wednesday, January 25, 2012 at 1:27pm by PsyDAG*

**college stat**

We do not have the graphic available, so we cannot help you.
*Tuesday, July 24, 2012 at 4:56pm by PsyDAG*

**stat (incomplete)**

We do not have access to your data.
*Saturday, October 27, 2012 at 9:09pm by PsyDAG *

**Stat**

Pearson's chi-square test
*Tuesday, December 4, 2012 at 7:42pm by MathGuru*

**CHECK ANSWERS AND HELP PLEASE**

MATH-STAT
*Monday, April 8, 2013 at 4:34pm by MELISSA *

**science**

2. so The power of the test in Problem 1 is ____________%.
*Saturday, August 24, 2013 at 6:16am by stat*

**STAT**

Use process from previous post.
*Saturday, October 12, 2013 at 12:32pm by PsyDAG*

**STAT - Please check answer**

You are correct!
*Monday, February 24, 2014 at 3:27pm by MathGuru*

**trig**

that would be the image i put up... i don\'t understand???
*Sunday, September 6, 2009 at 5:06pm by stat*

**stat **

I posted a question but never got an answer.
*Wednesday, October 20, 2010 at 12:01am by jackie*

**Prob ans stat**

Yes both answers are correct.
*Friday, July 29, 2011 at 12:19pm by Tanesha*

**stat and research**

C. Identify H0 and Ha for this study.
*Friday, November 23, 2012 at 11:05am by tristian*

**stat**

is any value possible? Or only certain ones?
*Monday, June 17, 2013 at 2:12pm by Steve*

**STAT**

Use same process as in previous post.
*Saturday, October 12, 2013 at 12:31pm by PsyDAG*

**stat**

Looking at a Venn diagram I suspect true
*Monday, February 17, 2014 at 8:17pm by Damon*

**Stat's**

1/46 * 1/45 * 1/44 * 1/43 * 1/42 = 1 / 164490480
*Sunday, October 26, 2008 at 3:56pm by Damon*

**Psydag--stat**

Thank you very much--I too finally got this answer.
*Sunday, September 26, 2010 at 2:57pm by Lori*

**stat **

When reposting, you need to repeat the same question, so we can respond.
*Wednesday, October 20, 2010 at 12:01am by PsyDAG*

**Statistics**

thanks . for other question answer is click both the options
*Saturday, August 17, 2013 at 9:19am by stat*

**stat**

Use the binomial distribution, with parameters 6 and 1/4. Add up the probabilities for x=5 and x=6.
*Sunday, June 13, 2010 at 6:35pm by unknown*

**Stat Help Please**

Correlation coefficient (r) is the square root of .755 (75.5%).
*Tuesday, March 12, 2013 at 1:02am by MathGuru*

**Statistics**

cheating for final exam stat 2.2x eh? :D i want the answer too!!! :P
*Saturday, May 18, 2013 at 10:24am by hehe*

**stat**

When rolling a die, is this an example of a discrete or continuous random variable?
*Monday, June 17, 2013 at 2:12pm by Bruce*

**math- stat 201**

Yes. See your other post for more detail.
*Thursday, November 21, 2013 at 2:49pm by MathGuru*

**stat**

ok there was a question that my teacher told me i got wrong the question asked me to compute the mean which I did... then the question went on to tell me compute the mean with another observation equal to zero then the part that he drew the line through was my response to this...
*Sunday, September 6, 2009 at 5:17pm by stat*

**Business Law**

out-of state cases aren't binding precedent in stat courts.
*Sunday, January 20, 2013 at 8:40am by julie*

**Statistics**

what's the answer? Under the null, the expected number of plants in Category D is ______.
*Saturday, August 17, 2013 at 8:39am by stat*

**math- stat 201**

I got 1.66667 so we should hire a new consultant?
*Thursday, November 21, 2013 at 2:49pm by lea *

**probability**

A coin is biased such that a head is thrice as likely to occur as a tail. Find the probability distribution of heads and also find the mean and variance of the distribution when it is tossed 4 times. See http://www.stat.yale.edu/Courses/1997-98/101/binom.htm Let p be the ...
*Sunday, January 21, 2007 at 12:49pm by mohsin*

**chemistry**

which element has the ground-stat electron configuration [Ar]4s^2 3d^10?
*Wednesday, October 20, 2010 at 6:30pm by Raynique*

**stat**

please answer the questions I posted my homework is due by thursday 1/13/11
*Tuesday, January 11, 2011 at 12:57am by charles*

**STAT**

A random variable X2 assumes only positive value.?
*Tuesday, October 11, 2011 at 9:33am by azriel ed pagayunan*

**stat**

The total area under the normal distribution curve is equal to a probability of____
*Monday, May 7, 2012 at 7:22pm by Nichole*

**Stat Help Please**

z-scores mainly range between -3 and 3 z = 2.6 is near the upper end.
*Sunday, March 10, 2013 at 10:01pm by Dr. Jane*

**Math...For All Math Tutors**

One of my three sons was a math/econ undergrad major from U Cal Santa Barbara. He found it difficult to get a job at first, then took additional actuary stat/prob correspondence courses and got certified as an actuary. That landed him a great job at Social Security ...
*Friday, February 15, 2008 at 10:29am by drwls*

**health**

what is a catchy starting sentence to stat talking about " hip replacement system recall"?
*Tuesday, September 7, 2010 at 4:13pm by harrison*

**cultural diversity**

the text did stat information in d. but since it ask for what not rooted in i think it was not the best, so i guess it is d instead of b or c
*Tuesday, February 15, 2011 at 6:10pm by Anonymous*

**Stat**

Surely you can use the link I gave you when I answered your last post. Did you even look at it ? you should get .031177
*Tuesday, June 5, 2012 at 7:38am by Reiny*

**mth-stat-help-plz**

How about A)? (Check a z-table. P-value is the actual level of the test statistic.)
*Monday, December 9, 2013 at 3:10pm by MathGuru*

**stat**

couple plans to have four children what is the probability that three are girls and one is a boy
*Sunday, January 26, 2014 at 9:55pm by jerry*

**stat math**

Stat hw question help me please? In a high profile murder case a sample of the general public's opinions concerning the guilt or innocence of the defendant is taken. A sample of n=100 males results in 62% of the respondents beliving that the defendant is guilty, while a sample...
*Sunday, February 1, 2009 at 9:56pm by helga*

**stat**

With Z = -.98, that is not even one standard deviation below the mean. The null hypothesis looks believable.
*Thursday, May 12, 2011 at 2:40am by PsyDAG*

**Math(Stat)**

If the tube were guaranteed to last for 600 hours, what percent of the tubes may have to be replaced under the guarantee
*Friday, November 25, 2011 at 10:38pm by Anonymous*

**STAT**

Let X be equal to the number of heads from tossing a coin twice. Verify that the following is the probability mass function of x. p(X x)=1/2(2-x)x!
*Monday, April 30, 2012 at 11:59pm by Michelle*

**Stat**

What particular measure of correlation would be most appropriate for use with two variables measured at an ordinallevel?
*Tuesday, December 4, 2012 at 7:42pm by Rolando*

**STAT**

Explain what each of the three most widely used measures of central tendency indicate to a psychological researcher.
*Monday, September 9, 2013 at 5:30pm by Jaky*

**STAT**

If you perform an independent groups t-test, you should be able to determine whether or not there is a difference between the two.
*Friday, October 4, 2013 at 5:07pm by MathGuru*

**Stat**

In statistic regressions, does "standard error" mean the residual (vertical distance of each point from teh regression line)?
*Sunday, November 16, 2008 at 1:23am by Guy*

**Stat**

the teacher wants me to make a survey questions about a sample and get a statistical data from it, how? including variance and standard deveriation. thanks
*Tuesday, December 30, 2008 at 4:54am by Omar*

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