Friday

July 31, 2015

July 31, 2015

Number of results: 1,173

**stats**

is there a good, relevant sites where i can get stats extra help?
*October 11, 2007 by Keirson*

**C++ Programming**

Design and create a class named Stats that has an array of 12 doubles as one of its member variables. The values in the array should be set by making 12 calls to a public member function named setValue that accepts two arguments, an integer indicating which value is being ...
*June 8, 2010 by kyuu09*

**Stats**

So i have a test in stats tomorrow and im trying to work on my study guide but im stuck at this question : Construct a confidence interval for the proportion for each case 90 percent interval 861 out of 2500. please help.
*October 19, 2014 by Jessica*

**Introduction programing visual basic**

break even analysis. suppose a certain product sells for a dollars per unit. then the revenue from selling x units of the product is ax dollars if the cost of producting each unit of the product is b dollars and the company has overhead cost of c dollars then the total cost of...
*March 4, 2015 by Caitlin*

**Introduction programing visual basic**

break even analysis. suppose a certain product sells for a dollars per unit. then the revenue from selling x units of the product is ax dollars if the cost of producting each unit of the product is b dollars and the company has overhead cost of c dollars then the total cost of...
*March 4, 2015 by Caitlin*

**stats**

Use this z-score formula for this problem: z = (x - mean)/(sd/√n) x = 1.25, 1.50 mean = 1.35 sd = 0.25 n = 40 Calculate two z-scores, then use a z-table to determine probability between the two scores. I hope this will help get you started. •stats. - Christina, Monday, ...
*March 18, 2013 by Christina Ms Sue please help*

**stats**

If SS = 50 and s^2 = 10, what is n?
*October 2, 2012 by eric*

**Stats**

A certian company enjoyed 3.5% profits in year 1 over its revenue in Year 0. In Year 2, it enjoyed 5.75% profits over Year 1. In Year 3, it posted 1.25% profits over Year 2. What single, constant profit over this period of years would have produced the same profit? The teacher...
*May 4, 2011 by Anonymous*

**College Stats**

Is .09 less than .05?
*May 8, 2011 by Carol*

**stats**

given n=74 an x=32.find ^p and ^q
*April 4, 2013 by Chris*

**stats**

if we reject the null hypothesis, we conclude that:
*April 1, 2010 by Anonymous*

**stats**

Compute the following and show your steps 7! /5!.
*August 7, 2010 by renae*

**stats**

what does it mean to say alpha is set at 0.5
*August 18, 2011 by nicole*

**math stats**

how do i draw a histogram for the data (8,0,7,5,5)
*January 24, 2012 by juan777*

**Stats**

What is the spread? How can it be found from a set of numbers?
*March 6, 2012 by Jill*

**math stats**

Calculate p ̅. x1 20 n1 50 x2 55 n2 100
*June 22, 2013 by jerry*

**Stats**

Which of the following numbers could be a proabilty of an event 0, 1.15, 0.03, -0.43, 1, 0.34
*October 7, 2014 by Sarah*

**Stats**

How do you find SSA, SSB & SSE??
*November 18, 2014 by Morgan *

**stats**

A sample has a mean of M = 73 and a standard deviation of s = 5
*June 18, 2015 by dj*

**stats**

how does one make a residual plot please?
*November 16, 2007 by Anonymous*

**Stats**

What are variance and covariance? What do they mean? What are their differences/relationship?
*September 22, 2008 by Blake*

**geography**

what are some tricks that will; help me remember the stats and the capitles
*February 23, 2010 by briana*

**stats**

Let z be a random variable with a standard normal distribution, P(-1.9<=z<=2.1)
*July 24, 2010 by Clay*

**stats**

Mean is 60 and standard deviation is 7. what percentage is 73 and below.
*October 12, 2010 by Christine*

**Stats**

If a confidence interval for the mean is 24.8 < ě < 29.6. What is the margin of error?
*November 1, 2010 by Erica*

**maths stats**

Please unscramlbe aaeebllnn which is a name. Thanks
*May 5, 2011 by orla *

**Stats**

what is the range of data with a total of 1000 values?
*September 4, 2011 by Ann james*

**bussi./stats**

what is the probability that a loaf of bread is between 22.75 and 23.00?
*September 6, 2011 by tim *

**STATS **

If Ho: μ = 50 and Ha: mu. = 59 and s = 10 what is αlpha if x exceeds 56for n=25
*March 15, 2013 by KP*

**stats 250**

A z-score of z = +3.00 indicates a location that is the following
*June 6, 2013 by Anonymous*

**stats**

what is the lower and upper limit for -645.321?
*February 6, 2015 by gisela*

**stats**

how do you construct a relative frequency table based on an ogive?
*September 6, 2008 by arielle*

**stats**

How would r change if researchers had recordered the proportions?
*February 6, 2009 by kate*

**stats**

if you know the mean and standard deviation, how do you determine the proportion that will and will not be included
*November 4, 2012 by mary*

**stats**

what is the distinction between repeated measurements and matched items?
*November 27, 2012 by jason*

**STATS**

What percentage of the area of the standard normal distribution is between z = -1.00 and z = +1.00? How do you know this?
*October 11, 2014 by Hernandez*

**health/stats**

can cholesterol follow a normal distribution exactly? why or why not?
*October 17, 2014 by rebekah*

**Math/Statistics**

does anyone know anyting about standard deviation... I have no idea what it is! http://en.wikipedia.org/wiki/Standard_deviation http://www.robertniles.com/stats/stdev.shtml
*August 5, 2007 by Kaz*

**stats**

x and y independent exponential r.v with respctive parameters 2 and 3. find the cdf and density of z = x/y.
*November 8, 2006 by ripa*

**stats**

find standard deviation for this problem daily precip- frequency-31,1,0,2,0,1 0.oo-0.49 0.50-0.99 1.00-1.49 1.50-1.99 2.00-2.29 2.50-2.99
*May 8, 2008 by ebony*

**Stats**

If X is a normal random variable with mean 60, and a standard deviation of 2, find: A: P (X<58) B: P(X>63) C: P(57<X<64)
*March 26, 2009 by April*

**psy Stats.**

how do you Calculate percentage when given standard deviation and mean
*May 10, 2011 by Kailey*

**Stats**

Can you tell me what ∑xy means? Like is in the sum of all x times y or what?
*July 10, 2011 by Carol*

**Stats**

Find the mean and standard deviation of the following probability distribution: x 1 2 3 P(x) 0.3 0.5 0.2
*October 25, 2011 by Jen*

**stats**

if income in the us was normally distributed, what z-score would represent the top 1%?
*October 31, 2011 by stacey*

**stats**

using a calculator need p value on a r tailed test if the n=9 and the t is 3.204
*December 2, 2011 by James *

**stats & prob.**

Given the values of n=5, p= 0.15, and (1-p)=0.85, calculate the standard deviation of the data.
*November 27, 2012 by Georgia*

**stats**

Given a standard normal variable. What is the probability that z lies between 1.48 and 2.13
*April 2, 2013 by chris*

**stats**

What does the best estimate mean after doing the liner regression equation
*May 6, 2013 by Anonymous*

**Stats help**

What does the best estimate mean after doing the liner regression equation
*May 7, 2013 by Anonymous*

**stats**

how to find the are for a standard normal curve that cuts off the upper 1.1%
*November 17, 2013 by Anonymous*

**Stats**

Need help finding the area under the normal curve between z = -1.0 and z = -2.0?
*April 16, 2014 by Betty*

**stats**

what is the probability that a 6 digit phone number contains at least one 8?
*July 19, 2014 by michelle*

**AP Stats**

transformation necessary to linearize the data. Be sure to convince me that you understand.
*August 10, 2014 by Hep*

**Stats**

What is the best measure to describe the total variability in a population or sample?
*March 11, 2015 by Dany*

**Stats**

Where can I find fuel efficient car sales statistic for recent years?
*October 25, 2007 by eason*

**college Stats**

If Y has a geometric distribution with success probability p, show that P(Y= an odd integer)= p/(1-(q^2))
*October 20, 2009 by james*

**stats help!**

What 2 numbers is the emperical rule of 95% between if the P of no shows is .10 and the average party size is 10
*January 13, 2011 by Lauren*

**stats**

What are the steps to solve P(x>k)=.025 when the mean is 500, standard deviation is 100
*March 13, 2011 by Lillie*

**stats**

Find the probability that the company will meet its goal on a particular 50 miles of line
*October 17, 2011 by Anonymous*

**business**

What data and stats do you need to know in order to identify profitable nations in which to export.
*October 5, 2012 by Lisa*

**Stats. **

Find the standard normal area for each of the following, showing your reasoning clearly. a. P(1.22<z<2.15) b. P(2.00<z<3.00) c. P(-2.00<z<2.00) d. p(z=0.50)
*April 11, 2014 by Kelly*

**stats**

If a measured distribution has an average of 65 and a variance of 16 and the standard deviation of the random error is 4
*September 9, 2014 by sas*

**stats**

(a) Suppose n = 26 and p = 0.30. Can we approximate p̂ by a normal distribution? Why? (Use 2 decimal places.)
*October 6, 2014 by neyrod*

**stats**

7. Give and interpret the 95% confidence interval for the hours of sleep a student gets.
*February 15, 2015 by Anonymous*

**Stats**

The heights of women in the US approximately follow a bell shaped curve. What do you think that means?
*November 11, 2009 by Sam*

**STATS**

A student's grade on an examination was transformed to a z value of 0.67. Therefore, we know that she scored approximately in the top
*December 8, 2009 by Anonymous*

**Stats**

Six letters are picked. Find the chance that they can be arranged to form the word RANDOM.
*April 15, 2014 by Mario007*

**stats**

what are the mean and standard error when using central limit theorem for dichotomous variable
*August 28, 2014 by mary*

**stats**

The probability that an observation, following a normal distribution, will lie within μ ± 1.3σ is a. 9.5 % b. 19.0% c. 40.3% d. 50.0% e. 80.6%
*May 11, 2015 by meryy*

**Stats**

Find the score that separates the top 75% from the bottom 25% if the Mean is 100 and the Standard deviation is 15
*June 11, 2015 by cindy*

**Stats**

Why is it important to know the possible errors we might make when rejecting or failing to reject the null hypothesis?
*May 20, 2008 by Christine*

**FST (functions, stats, and trigonometry)**

what is the equation for the axis of symmetry for the function f(x)=IxI?(absolute value)
*October 7, 2009 by Jared*

**Stats**

A testing service has 1000 raw scores. It wants to transform the distribution so that the mean =10 and the standard deviation = 1. To do so ?
*February 18, 2010 by Z*

**Algebra 2: Prob and Stats**

Find the sample size that produces the margin of error +-4.0% a) 325 b) 25 c) 16 d) 625
*May 24, 2010 by Skye*

**Stats**

In a distribution of scores with a mean of 234 and a standard deviation of 47, what is in the 43rd percentile ? and what formula do i use ?
*February 26, 2011 by Ruben*

**Stats**

In a distribution of scores with a mean of 234 and a standard deviation of 47, what is in the 43rd percentile ? and what formula do i use ?
*February 26, 2011 by Ruben*

**stats**

women age 20-29 is 36ml staandard deviation 7ml. What is probability greater than 45ml and between 30 and 62 ml
*August 27, 2011 by anna*

**Stats**

Five measurements are taken and are 59.5", 61.33", 60.55", 61.00", 59.8". Find the likely size of the chance error in a single measurement.
*July 17, 2012 by Anonymous*

**STATS**

The following confidence interval is obtained for a population proportion, p:0.556 < p < 0.584. What is the point estimate, p?
*September 30, 2012 by 1234*

**stats**

1. Find the sample variance and standard deviation 6, 53,11,49,35,26,28,28,31,31 s squared = (round to the nearest hundredth as needed)
*October 2, 2012 by pat*

**stats**

if x is a normally distributed random variable with amean of 8.00 if the proability for x is less than 9.54 is 0.67, then find the standard deviation of x
*October 21, 2012 by tamara*

**Stats**

Suppose X is a uniform random variable with C = 20 and d = 90. Find the probability that a randomly selected observation is between 23 and 85.
*November 17, 2012 by Marie*

**stats**

X is normally dsitributed with mean 250 and standard deviation 40. what value of X does only top 15% exceed?
*March 24, 2014 by Anonymous*

**Stats**

for a sample of n=20 how large a Pearson correlation is necessary to be statistically significant for a two tailed test
*December 4, 2014 by Ivan*

**stats**

Assume that aset of test scores is normally distributed with a mean of 100 and a standard deviation of 20 use the 68-95-99?
*July 4, 2010 by Anonymous*

**buss/stats**

what is it called when all the items in the population have the same chance of being selected for the sample?
*October 8, 2011 by Tim*

**Stats**

a die is rolled three times. find the chance that not all the rolls show 3 or more spots
*December 4, 2011 by Fay*

**stats**

. Find the mean and standard deviation of the following probability distribution: x 1 2 3 P(x) 0.4 0.25 0.35 Please show all of your work.
*October 7, 2012 by Anonymous*

**Stats**

If X and Y are uncorrelated in the population, the expected value of the estimated linear regression coefficient (slope) is 0. True False
*November 5, 2012 by Mickie*

**stats**

if i have a sample size of 200, 16% are poor, what is my mean and standard deviation. my answers do not make any sense
*January 1, 2013 by gary*

**stats**

explain and give example for each of the following types of variables: (a) equal-interval, (b) rank-over, and (c) nominal
*September 2, 2013 by lucy*

**stats**

If the effect size of a hypothesized phenomenon is .8, then how many subjects are needed to achieve .5 power? alpha = .05; two-tailed
*April 23, 2015 by Anonymous*

**college stats**

Again sorry for all the questions. please help, I am not good at stats and find these questions very difficult. I would appreciate an explanation if possible. 1.What is the sample average? 2.What is the SD of the box? 3.What is the number of draws from the box (the sample size...
*July 12, 2013 by penelope*

**Prob and Stats**

In a multiple regression with 5 predictors in a sample of 56 U.S. cities, what would be the critical value for an F test of overall significance at a= .05? A. 2.45 B. 2.37 C. 2.40 D. 2.56
*December 9, 2009 by please help!*

**Stats**

The scores on a mathematics exam have a mean of 65 and a standard deviation of 7. Find the x-value that corresponds to the z-score 1.645.
*April 21, 2010 by Isa*

**stats**

three children in a class of 16 are being given awards. how many possible ways are there to pick winners if each prize is different.
*September 25, 2010 by cb*

**business and stats**

What type of data is the projected return on an investment? Qualitative , continous, attribute,discrete or none of the above
*August 31, 2011 by Tim*

**stats**

if one can choose any six of 40 numbers, in any order, to play a state lottery game, how many different arrangments are possible?
*February 26, 2012 by tim*

**Stats**

What is the minimal sample size needed for a 99% confidence interval to have a maximal margin of error of 0.06 if there is no preliminary estimate for p?
*July 8, 2012 by Lynn*