Wednesday

April 1, 2015

April 1, 2015

Number of results: 11,972

**what does interim mean?**

I looked up the word in the dictionary and it said it has something to do with time. However I do not understand the meaning of interim in this question. Can you please help? "Can individuals be granted interim measures to avert the further deterioration of situations that do ...
*April 23, 2008 by Christi*

**accounting**

how to calculate interim dividend for 6 months ending on 30th june @ 3% for the period ending on 31/12/08 and also show how it will affect the profit & loss account & balance sheet if the interim dividend on trial balance is 18000
*December 22, 2009 by vinitha*

**Math**

A set of data has a mean of 25 and an outlier of 5. You find the mean without the outlier. Which of the following best describes your new mean? A. The new mean is the same as the original mean. B The new mean is the as the meadian C. The new mean is greater than the original ...
*January 11, 2011 by Please help*

**english**

i have to make analogys for my vocab words and i need help apex:peak;________:__________ Assimilate:_____;_______:_________ interim:interval;_____:_______ and also for Meander,metropolis,momentous,obstrepous,pensive perilou'shoddy,surly,and tirade
*November 30, 2010 by kayla*

**Statistics**

If Y' = a +bX for all i and a=the mean of Y - b*the mean of X, prove that SigmaY' = SigmaY (subscript i). Hint: replace a with mean of Y minus b*mean of X and take the sum of both sides of the equation--that is, SigmaY'(subscript i)=Sigma(mean of Y-b*Mean of X + bX(subscript i...
*March 21, 2010 by Kassie*

**Statistics**

A firm claims that only 10% of its accounts receivables are over 30 days past due. The bank that supplies working capital or interim loans to the firm is suspect of the figure and accordingly takes a random of 100 accounts of the firm. Find probability that the sample ...
*March 16, 2015 by Leo Elvis*

**Statistics**

A firm claims that only 10% of it's accounts receivables are over 30 days past due. The bank that supplies working capital or interim laons to the fimrs is suspect of the figure and accordingly takes a random samole of 100 accounts of the firm. Find the probability that the ...
*January 3, 2015 by Leslie Meagan*

**mrs. sue algebra help**

Mrs.Sue my homework from yesterday i had wrong instructions i needed to find the mean median and mode. not the outlier an affect. my teacher switched the assignment can you check my answers i have to find the mean, median and mode 1) 8 12 6 9 5 mean: 8 median : 8 mode : no ...
*September 28, 2011 by Marko*

**algebra help mrs. Sue **

Mrs.Sue my homework from yesterday i had wrong instructions i needed to find the mean median and mode. not the outlier an affect. my teacher switched the assignment can you check my answers i have to find the mean, median and mode 1) 8 12 6 9 5 mean: 8 median : 8 mode : no ...
*September 28, 2011 by Marko*

**Business Statistics**

A firm claims that only 10% of it's accounts receivables are over 30 days past due. The bank that supplies working capital or interim loans to the firms is suspect of the figure and accordingly takes a random sample of 100 accounts of the firm. Find the probability that the ...
*March 16, 2015 by Leo Elvis*

**reading**

credible,cursory,designate,deviate,improvise,interim,latent,secular,shun,simulate. In seventh grade, Jack looked upon girls with great disdain. Then, in the ____(Interim) between seventh and eight grades, his___(Latent)interest in them suddenly surfaced. In looking for a ...
*July 2, 2014 by chanel*

**statistics**

basically i'm at the begining of the text book doing summer work it's talking about mean and stuff asked to find the mean of a set of data and given 14 different numbers the question then goes on and tells me a fifteenth number is added to the set of data with the value of ...
*July 15, 2009 by statistics*

**statistics**

If μ =10 and σ =4 for a distribution of sample mean, with n=16 for each mean, how far above the population mean (in %) is a sample mean score of 12
*February 24, 2011 by Anonymous*

**algebra mean med mode**

can you check my answers i have to find the mean, median and mode 1) 8 12 6 9 5 mean: 8 median : 8 mode : no mode 2) 3.4 0.53 1.3 2.9 1.47 0.24 mean: 1.64 median : 1.385 mode: no mode 3) -6 3 -2 6 7 -3 -5 8 mean : 1 median : 1 (? not sure on that) mode : no mode 4) -17 32 -9 0...
*September 28, 2011 by Marko*

**math**

pls. explain how to get this: A number x is the harmonic mean of two numbers a and b if 1/x is the mean of 1/a and 1/b. a) Write an equation to represent the harmonic mean of a and b. b) Determine the harmonic mean of 12 and 15. c) The harmonic mean of 6 and another number is ...
*November 9, 2011 by hi*

**Math 115 CH 8**

What was the percent increase in the mean population from 1950 to 2000? 1950 mean: 426,000,042.5 2000 mean: 1,046,500,000 Do I divide the mean for 2000 by the mean for 1950?
*December 8, 2008 by Debbie*

**geometric mean**

what is the ngeometric mean of 4 and 4 by definition, sqrt (4*4) or 4 how do you find the geometrical mean of a right triangle?
*January 30, 2007 by sam*

**Stats-please help**

using a=0.05, test for mean 1 greater than mean 2. group n mean std dev. 1 30 13.5 1.1 2 30 12.0 1.2
*April 1, 2009 by Sam*

**geometric mean**

The geometric mean of two postitive numbers a and b is sqrt(ab). Show that for f(x) = 1/x on any interval [a,b] of positive numbers, the value of c in the conclusion of the mean value theorem is c = sqrt(ab) I have no idea how to do this! If the mean of a and b is sqrt(ab), ...
*November 5, 2006 by Jen*

**statistics**

2. We would like to test whether the population mean is less than 40. Suppose that a hypothesis test is conducted to determine if the mean of the population has decreased or not. Describe what a Type II error would mean for this example. A) Reject H0 when the population mean ...
*May 8, 2013 by ali awan*

**math**

In the set of numbers 2,3,5,7,7,8,10 what is a) the arithmatic mean b) the harmonic mean c) geometric mean
*November 14, 2008 by devon*

**geometry**

Find the geometric mean between 7 and 21 I do not have a clue where to start the equation given was extreme/extreme=mean/extreme so (mean)(mean)=(extreme)(extreme) help please
*February 23, 2009 by Terri*

**math outlier**

can you check if i have correct these 2 questions #1 find the outlier and tell how it affects the mean for: -13, -16, -12, -16, -3, -14 mean: 12.3 the outlier is: -3 mean without outlier: 14.2 THE OUTLIER LOWERS THE MEAN BY : 1.9
*September 5, 2012 by marko *

**Statistics **

With a known population mean of 100, and a known standard of error of the mean of 7.5, what is the probability of selecting at random a sample whose mean is equal to 110 or greater?
*February 27, 2015 by Veronica *

**statistics**

According to CreditReport, the mean credit score in Georgia for 2007 was 668. Suppose that a hypothesis test is conducted to determine whether the mean credit score in Georgia has decreased since that time. Describe what a Type I error would mean in the context of this problem...
*May 8, 2013 by ali awan*

**Statistics**

he Oil Price Information Center reports the mean price per gallon of regular gasoline is $ 3.79 with a population standard deviation of $ 0.18. Assume a random sample of 40 gasoline stations is selected and their mean cost for regular gasoline is computed. 1. What is the ...
*September 26, 2010 by John*

**math outlier**

can you check if i have correct #1 find the outlier and tell how it affects the mean for: -13, -16, -12, -16, -3, -14 mean: 12.3 the outlier is: -3 mean without outlier: 14.2 THE OUTLIER LOWERS THE MEAN BY : 1.9
*September 5, 2012 by marko *

**math mean median mode**

which of the following shows the order from least to greatest for the mean, the median, and the mode of this set of data? a) mode , median, mena b) median, mode , mean c) mode, mean, median d) mean, median, mode i dont understand what the question is about?
*October 6, 2011 by marko*

**Managerial Accounting**

IRR: Even Cash Flows Williams and Park Accounting Practice is considering investing in a new computer system that costs $9,000 and would reduce processing costs by $2,000 a year for the next six years. Required: Calculate the internal rate of return, using the time value of ...
*April 13, 2013 by Lisa*

**Managerial Accounting**

IRR: Even Cash Flows Williams and Park Accounting Practice is considering investing in a new computer system that costs $9,000 and would reduce processing costs by $2,000 a year for the next six years. Required: Calculate the internal rate of return, using the time value of ...
*April 13, 2013 by Lisa*

**Managerial Accounting**

IRR: Even Cash Flows Williams and Park Accounting Practice is considering investing in a new computer system that costs $9,000 and would reduce processing costs by $2,000 a year for the next six years. Required: Calculate the internal rate of return, using the time value of ...
*April 13, 2013 by Lisa*

**A l g e b r a MeanMed Mode**

can you check my answers i have to find the mean, median and mode 1) 8 12 6 9 5 mean: 8 median : 8 mode : no mode 2) 3.4 0.53 1.3 2.9 1.47 0.24 mean: 1.64 median : 1.385 mode: no mode 3) -6 3 -2 6 7 -3 -5 8 mean : 1 median : 1 (? not sure on that) mode : no mode 4) -17 32 -9 0...
*September 28, 2011 by Marko*

**Statistics**

With a known population mean of 100, and a known standard error of the mean of 7.5, what is the probability of selecting at random a sample whose mean is 110 or greater? I need help getting this started, thanks
*November 8, 2010 by Bee*

**Statistics**

One sample of n=20 scores has a mean of M=50. A second sample of n=5 scores has a mean of Mean=10. If the two samples are combined, what is the mean
*October 26, 2011 by Sher*

**algebra 1 question pls help!!!**

1. Find the mean, median, and mode of the data set: 15, 16, 21, 23, 25, 25, 25, 39 a.mean = 23.6, median = 25, mode = 24 b.mean = 24, median = 23.6, mode = 25 c.mean = 24.6, median = 24, mode = 25 d.mean = 23.6, median = 24, mode = 25 This is what i got: Mean - 23.4 Median - ...
*April 13, 2014 by TTR+S<3*

**math statistics**

The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard deviation is $.20. 1. What is the probability that ...
*October 19, 2009 by aaron*

**math statistics**

please help me I've waited for hours The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard deviation is $....
*October 19, 2009 by aaron need urgent help*

**math**

Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal place. a. Mean b. Range c. Variance d. Standard deviation e. What value is affecting the mean ...
*November 8, 2013 by Anonymous*

**math**

Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal place. a. Mean b. Range c. Variance d. Standard deviation e. What value is affecting the mean ...
*November 8, 2013 by Anonymous*

**Statistics**

Dr. Hernandez plans to measure FEV in a random sample of n young women from a certain popu- lation, and to use the sample mean y ̄ as an estimate of the population mean. Let A be the event that Hernandez’s sample mean will be within ±100 ml of the popula- tion mean. ...
*May 4, 2014 by Audrey*

**Math- Statistics**

A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. * b. Find the ...
*February 8, 2011 by Tammy*

**Math Ms. Sue please**

2. Find the outlier in the data set and tell how it affects the mean. 4, 4, –6, –2, 14, 1, 1 (1 point) –6; it raises the mean by about 1. –6; it lowers the mean by about 1. 14; it raises the mean by about 1.9. 14; it lowers the mean by about 1.9. 5. 22.6 is an outlier for ...
*March 8, 2013 by Delilah*

**math**

You are given the following: there are 27 pieces of data mean is 60 standard deviation is 25 You realize that one of the pieces of data is inputted wrong..... it was a 25, but it is suppose to be 52.... find the actual mean and standard deviation for the actual set of numbers ...
*October 9, 2006 by jj*

**statistics**

population mean=42.6 standard deviation=12 n=16 M=34.4. Is this mean a reasonable outcome for a sample of n=16, or is this sample mean very different from what would usually be expected? I obtained a z -score of -2.73. Thus, that would make the sample mean a reasonless outcome...
*May 29, 2008 by Lindy*

**Calculus**

Find the average or mean slope of 2x^3 - 6x^2 - 90x +3 on the interval [-6,10]? By the Mean Value Theorem, we know there exists at least one c in the open interval ( -6 , 10 ) such that f'( c) is equal to this mean slope. ::>> I already found the mean slope of the ...
*April 9, 2010 by Si*

**Statistics**

1,3,5,3,2,29,3,4,2,1,2 Mean 5 Range 28 Variance 64.8 Standard Deviation 8.0 1.What value is affecting the mean and SD of this distribution? 2.Does the mean adequately represent this disribution? If bot, what would be a better measure of central tendency for this data set?
*November 5, 2013 by Anonymous *

**mean median mode**

i need to find from the following data the outlier and how the outlier affects the mean. find also the mean median mode here are the numbers: 156 145 162 215 148 163 here is what i got: outlier; 215 with the outlier the mean is: 164.8 with out the outlier mean is: 154.8 mean ...
*September 29, 2011 by Marko*

**math**

what is a mean and how you do it A mean is the average. To find the mean add the numbers together. Then divide. For instance, to find the mean of 4, 8, and 9, you need to add those three numbers together and get 21. Divide 21 by 3 to get the mean -- 7.
*June 12, 2007 by isaiah*

**Math (Statistic)**

Considered the sampling distribution of a sample mean obtained by random sampling from an infinite population. This population has a distribution that is highly skewed toward the larger values. a) How is the mean of the sampling distribution related to the mean of the ...
*February 19, 2007 by Jennifer*

**ALGEBRA**

Find the mean, median, and mode of the data set. Round to the nearest tenth. 15, 13, 9, 9, 7, 1, 11, 10, 13, 1, 13 (1 point) • mean = 9.3, median = 8, mode = 13 • mean = 8.5, median = 10, mode = 13 • mean = 9.3, median = 10, mode = 13 • mean = 8.5, median = 10, mode = 8
*May 15, 2014 by Sandra*

**ALGEBRA**

(not for Ms.Sue) Find the mean, median, and mode of the data set. Round to the nearest tenth. 15, 13, 9, 9, 7, 1, 11, 10, 13, 1, 13 • mean = 9.3, median = 8, mode = 13 • mean = 8.5, median = 10, mode = 13 • mean = 9.3, median = 10, mode = 13 • mean = 8.5, median = 10, mode = 8
*May 15, 2014 by Sandra*

**Statistics**

The estimated standard error, sM, provides a measure of the average or standard distance between _____. a score and the population mean (X and ì) a sample mean and the population mean (M and ì) a score and the sample mean (X and M) None of the other options is correct.
*January 23, 2013 by Jackie*

**Algebra**

A supervisor finds the mean number of miles that the employees in a 9the x has a line on top)department live from work. He finds X=2.9 and s=3. Which statement must be true? z376 is within 1 standard deviation of the mean. z37 is between 1 and 2 standard deviations of the mean...
*July 18, 2014 by Junior*

**geometric mean**

Eighteen is the Geometric Mean of 12 and what number 18 = sqrt (12 x) Solve for x. The answer is an integer, and it isn't 24 (That's the arithmetic mean). cheese is yellow
*May 7, 2007 by mike*

**Algebra**

If a researcher wanted to know the mean weight (the mean is the sum of all the measurements divided by the number of measurements) of women in the U.S., the weight of every woman would have to be measured and then the mean weight calculated, an impossible task. Instead, ...
*September 29, 2014 by Kim*

**Math-Statistics**

Which of the following would be an appropriate alternative hypothesis? A) The population mean is equal to 3.4. B) The sample mean is greater than 3.4. C) The population mean is greater than 3.4. D) The sample mean is equal to 3.4. E) The sample mean is not equal to 3.4.
*December 5, 2009 by Ashley*

**Statistics**

This is the remaining part of Jackie's question:randomly selected adults. Show the formula that you will use and then calculate the mean age. Answer: Formula: mean = Mean:
*October 22, 2009 by Jackie*

**math(mean,average)**

what does distribution mean in this sentence: the mean is sensitive to the exact value of all the scores in the distribution?
*March 4, 2009 by LOu*

**English**

I will give you what you want, I mean, anything. Q1. Is 'what you want' in apposition with 'anything'? Q2. What is the role of 'I mean'? What other expressions can we use instead of 'I mean'?
*August 29, 2011 by rfvv*

**statistic**

the mean of adult men is 172 pounds with a standard deviation of 29 pounds. ask 20 men thier weight and use excel to calculate the mean. test the hypothesis that the mean is not 172 pounds at the .10 significance level. and how many men should be sampled if you want to be 98% ...
*December 4, 2010 by natasha*

**spanish**

what does "contesta estas preguntas sobre ti, tu familia, y tus amigos" mean. does it mean answer the questions about yourself, your family, and your friends? does that mean i have to have 3 sentances for each question.
*September 14, 2010 by j*

**math help**

A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (f) What is the probability that the sample mean will be within 6 units of the mean? (Give your answer correct to four decimal places.)
*June 16, 2013 by Sue 6f*

**statistics**

a distribution of scores has 6, but the value of the mean is unknown, a researcher plans to select a sample from the population in order to learn more about the unknown mean, if the sample consist of n= 9 scores , how accurately should sample mean represent the population mean
*December 18, 2011 by herry*

**College Chem**

Please tell me if this is correct...Finding the mean, the average deviation from the mean, the standard deviation from the mean, and the relative deviation from the mean...of 10.1, 10.4 and 10.6 Mean-10.4 Average deviation-0.167 Standard deviation-0.25 Relative deviation-2%
*March 19, 2010 by London*

**Math**

The mean salary of the female employees of one company is $29,525. The mean salary of the male employees of the same company is $33,470. Can the mean salary of all employees of the company be obtained by finding the mean of $29,525 and $33,470? Explain your thinking. Under ...
*December 10, 2010 by Rena *

**Statisitcs**

The mean height of fully grown birch trees are 18 feet with a standard deviation of 1.2 feet, normally distributed. Random samples of size 9 are drawn from this population and the mean of each sample is determined. Find that mean and the standard error of the mean, and the ...
*November 14, 2012 by D*

**statistics**

5. Find the weighted mean of the following two samples. Sample 1: n = 5 and the mean = 20 Sample 2: n = 15 and the mean = 10.
*October 10, 2013 by shanice*

**statistics**

in order to estimate the mean amount of time computer users spend on the internet ea mn, how many people do i interview to have 90% confident sample mean within 11 min of the pop mean? Assum sd= 203 min
*October 8, 2014 by heather*

**Statistics**

For a population with a mean of (mew) = 50 and a standard deviation of 10, how much error, on average, would you expect between the sample mean (M) and the poulation mean for: a) a sample of n=4 scores b) a sample of n=16 scores c) a sample of n=25 scores Are the sample mean (...
*May 24, 2011 by Aestas*

**chemistry**

Is average speed (u) the same as root mean square velocity? I found a formula for root mean square velocity which I know is also used for average speed: (3RT/MM)^1/2 Is that right? I don't know what that is supposed to be an average OF, but is all likelihood it is a root mean ...
*January 6, 2007 by Chris*

**stats**

sample of n=64 scores is obtained from population with standard deviation =15 sample mean is 10 pts greater than the poulation mean what is zscore for sample mean
*March 22, 2013 by tita*

**geometry**

a salesperson drove 238,259,87,163and 198 miles on a 5 day trip what was the mean number of miles driven per day? please Add the 5 numbers together. Then divide by 5 to find the mean (average) number of miles she drove each day. what is a mean A mean is the average. To find ...
*June 12, 2007 by isaiah*

**statistics**

A group of 49 randomly selected construction workers has a mean age of 22.4 years with a standard deviation of 3.8. According to a recent survey, the mean age should be mu=21.9. Test this hypothesis by constructing a 98% confidence interval for the population mean.
*November 19, 2013 by Cheryl*

**Data Management **

Could you help me with this math question. The mean of 4 numbers is 5 and the mean of 3 different numbers is 12. What is the mean of the 7 numbers combined? Produce an algebraic solution.
*March 2, 2015 by Mabel*

**statistics**

Use the given information to find the minimum sample size required to estimate an unknown population mean u. How many adults must be randomly selected to estimate the mean FICO (credit rating)score of working adults in a country? We want 95% confidence that the sample mean is ...
*November 15, 2013 by anonymous*

**Statistics**

The mean television viewing time for Americans is 15 hours per week. Suppose a sample of 60 Americans is taken to further investigate viewing habits. Assume the population standard deviation for weekly viewing ime is o = 4 hours. A What is the probability the sample mean will ...
*October 30, 2007 by Rebecca*

**accounting**

how do you calculate PV ratio? What do you mean by "PV" Is it Present Value, which takes some nominal amount in the future and divides by an appropriate discount rate. Or does your PV mean Profit Volume, which is profits (possibly without regard to fixed costs) divided by ...
*November 2, 2006 by Anonymous*

**statistics**

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is $47,000. A random sample of 30 of the firm’s programmers has a mean salary of $46,500 with a standard deviation of 5500. ...
*June 6, 2011 by Eric*

**Statistics**

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is $47,000. A random sample of 30 of the firm’s programmers has a mean salary of $46,500 with a standard deviation of 5500. ...
*June 7, 2011 by Kelly*

**statistics**

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is $47,000. A random sample of 30 of the firm’s programmers has a mean salary of $46,500 with a standard deviation of 5500. ...
*June 14, 2011 by Shawnie*

**Statistics**

1) A Motor Company has purchased steel parts from a supplier for several years and has found that 10% of the parts must be returned because they are defective. An order of 25 parts is received. What are the mean and standard deviation of the defective parts? A) Mean = 3.5; ...
*February 15, 2009 by BEARHUG*

**statistics**

11. A local health care company wants to estimate the mean weekly elder day care cost. A sample of 10 facilities shows a mean of $250 per week with a standard deviation of $25. What is the 90 percent confidence interval for the population mean?
*June 18, 2012 by tristen*

**statistics**

An important indicator of lung function is forced expiratory volume(FEV), which is the volume of air that a person can expire in one second. Dr. Jones plans to measure FEv in a random sample of n young women from a certain population, and to use the sample mean as an estimate ...
*February 16, 2008 by lauren*

**statistics**

A random sample of n = 4 scores is selected from a population with ƒÝ = 80 and ƒã = 20. On average, how much difference would you expect between the sample mean and the population mean? a. 0 points (the sample mean should be the same as the population mean) b. 5 points c. 10 ...
*December 31, 2013 by Lyndyc*

**statistics**

Test scores on the ACT exam are normally distributed with a mean of 211 and deviation of 4.8. Using the 68-95-99.7 rule, find the percentage of ACT scores within 9.6 of the mean of 21.1, and 14.4 of the mean of 21.1
*August 1, 2010 by Kasi*

**Statistics**

If the mean family size is 4.75 what is the total population of a city of 25000 families? Is it correct if I calculate it as follows: Mean: (x : 25000) = 4.75 Mean: x = 118750 number of population
*April 9, 2011 by Pavlos Cs*

**Economic Stability**

What does this term mean? Does it basically mean.. The rate at which the general level of prices for goods and services is rising. Could you sort of simplify it a bit more. What does general level mean?
*April 15, 2011 by Anonymous*

**statistics**

A population has a mean of 300 and a standard deviation of 50. Suppose a sample of size 125 is selected and is used to estimate . What is the probability that the sample mean will be within +/- 3 of the population mean (to 4 decimals)?
*October 14, 2014 by Anonymous*

**Mrs. Sue Algebra outlier/mean recheck**

find the outlier of each set of data describe how the outlier affects the mean. just want to double check on 2 problems that we did -15 -12 -19 0 -20 -14 the outlier is 0 the mean with the outlier 0 is: -13.33 the mean without the outlier 0 is: -16 is this correct? next one: ...
*September 27, 2011 by Marko*

**Stats**

You take and SRS of size 25 from a population with mean 200 and standard deviation of 10. Find the mean and the standard deviation of the sampling distribution of your sample mean.
*July 14, 2011 by Ryan*

**Statistics**

A population has a mean of 200 and standard deviation of 50 and simple random sample size of 100 and x is used to estimate u. What is the probility that the sample mean will be within plus or minue 5 of the population mean?
*May 10, 2010 by Vroni*

**Geography**

Explain the purpose of a key on a map The key lets you know what the symbols mean. For example a little tree may mean a state park. A picnic table and tent may mean a campgroung with a picnic area.
*January 30, 2007 by cindy*

**Algebra--to Bob (Please)**

How do you find the mean? add all the data, divide by the number of data. For instance, the mean of 56 adn 34 56+34= 90 divide by 2, mean is 45
*March 13, 2007 by M*

**arithmetic**

A set of 7 numbers has a mean of 9. What additional number must be included in this set to create a new set with a mean that is 3 less than the mean of the original set?
*October 20, 2014 by Praveen*

**Math for the middle school and elementary teacher**

A prof. teaches 2 calc. classes. The first class has 25 students and their mean on the 1st test was an 82. The 2nd class has 15 students and their mean on the same test was a 74. What is the mean on this test if the prof. combines the score for both classes? Is the answer the ...
*February 28, 2012 by liz*

**statistics**

use SPSS to calculate the 90%, 95% and 99% confidence intervals for the mean of the variable weight. Interpret the three confidence intervals in terms of whether there is a significant difference between the mean of the sample and a hypothesized mean of 150.
*June 29, 2014 by love*

**sda high**

A population has a mean of 200 and a standard deviation of 50. Suppose a simple random sample of size 100 is selected and is used to estimate μ. What is the probability that the sample mean will be within 5 of the population mean?
*November 1, 2014 by lawrence*

**statistics**

I'm trying to work through the proof for SST = SSM + SSE MEAN = ∑(X)/N SST = ∑((x - MEAN)^2) = ∑(x^2 - 2 * x1 * MEAN + MEAN^2) = ∑(x^2) - 2 * MEAN * ∑(x) + N * MEAN^2 = ∑(x^2) - 2 * ∑(x)^2/N + ∑(x)^2/N = ∑(x^2) - ∑(x...
*August 29, 2007 by statstudent*

**statistics**

-A set of seven scores has a mean of 10. If one of the scores is changed from X=15 to X=1, what will be the new value for the new mean? -A sample of n=8 scores has a mean of M=12. One new score is added to the same and the new mean is found to be M=13. What is the vaule of the...
*January 27, 2008 by Joan*

**Statistics**

IQ score are normally distributed with a mean of 95 and a standard deviation of 17. If the sample size is n=36 find the mean and standard distribution of sample mean
*April 7, 2013 by Megan*

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