Wednesday

July 23, 2014

July 23, 2014

Number of results: 19,052

**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 homework help**

A true-false test consists of 50 questions. how many does a student have to get right to convince you that he is not merely guessing Explain
*October 17, 2011 by julia42*

**math stats**

A true-false test consists of 50 questions. how many does a student have to get right to convince you that he is not merely guessing Explain
*October 17, 2011 by julia42*

**stats**

A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?
*September 1, 2012 by Anonymous*

**Stats**

A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?
*September 9, 2012 by Courtney*

**stats**

a test consists of 25 multiple choice questions. Each has 5 possible answers, which only one is correct. If a student guesses on each question, find the following: a) prob that he will guess all of them right b)prob that he will guess at most 12 right c) prob that he will ...
*February 18, 2011 by gio*

**Is this right?? Stats....**

How many green elements are required to make this a legitimate probability distribution if there are a total of 50 elements in this sample? x red blue orange brown green P(x) 0.20 0.16 0.28 0.24 Would it be 0.12??
*October 25, 2011 by Jennifer*

**Stats**

Find the P-value for a left tailed hypothesis test with a test statistic of z= -1.77. Decide wether to reject the null if the level of significance is alpha= 0.05. Please help I've tried everything and I can't figure out how to get the right answer..
*April 17, 2014 by Christina*

**Math-stats**

The playing times of 20 songs on a top-hits radio station are recorded in the chart below. Playing Time (minutes:seconds) 3:32 3:24 2:54 3:07 4:52 3:45 2:39 3:09 3:34 3:26 3:35 4:17 4:03 3:52 5:10 4:59 3:07 4:00 3:07 2:56 In a histogram of this data, which bar would have the ...
*July 2, 2009 by Sophie*

**Stats**

Make a boxplot of the salaries. To the right is a stem-and-leaf plot of the salaries for the 2006 New York Yankees. The stems are millions of dollars; the leaves are hundreds of thousands. For example, the "5|4" represents the 5.4 million dollars earned by Kyle Farnsworth. 0 ...
*September 22, 2009 by CM*

**stats**

Our students were asked to rate their admiration of Hillary Rodham Clinton on a scale of 1 to 7. They were asked to rate their Jennifer Lopez and Venus Williams on a scale of 1 to 7. The mean rating of Clinton was 4.06 with a standard deviation of 1.70. The mean rating of ...
*March 12, 2009 by sue*

**stats**

Our students were asked to rate their admiration of Hillary Rodham Clinton on a scale of 1 to 7. They were asked to rate their Jennifer Lopez and Venus Williams on a scale of 1 to 7. The mean rating of Clinton was 4.06 with a standard deviation of 1.70. The mean rating of ...
*March 12, 2009 by sue*

**stats**

two factor ANOVA indep measures exper. 2 level factor A 3 level factor B n=5 in each treatment SS df ms between 240 5 factor A ? 1 ? Fa=24 factor B ? 2 ? AxB 60 2 30 within ? 24 5 are this answers right for SS A=120 B=80 w/I=120
*March 24, 2013 by tita*

**stats**

if you randomly answer a t/f test and want to figure the possibililty of gettng at least an 80......how do you start and then once you have done this, what if you want to try it 4 more times? HELP Let N be the number of questions. You are asking for the probability of getting ...
*July 5, 2007 by holly*

**Is this right?? Stats....**

Classify the following as discrete or continuous random variables. (A) The time it takes to run a marathon (B) The number of fractions between 1 and 2 (C) A pair of dice is rolled, and the sum to appear on the dice is recorded (D) The length of a broad jump I got: (A) ...
*October 25, 2011 by Jennifer*

**Math**

Solve the puzzle =RIGHT(LEFT($B$2,84),1) =RIGHT(LEFT($B$2,17),1) =RIGHT(LEFT($B$2,138),1) =RIGHT(LEFT($B$2,2),1) =RIGHT(LEFT($B$2,234),1) =RIGHT(LEFT($B$2,138),1) =RIGHT(LEFT($B$2,4),1) =RIGHT(LEFT($B$2,173),1) =RIGHT(LEFT($B$2,2),1) =RIGHT(LEFT($B$2,209),1) =RIGHT(LEFT($B$2,4...
*November 9, 2012 by Suzanne*

**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*

**ap stats**

based on over 800 housing prices collected at random from the city of Los Angeles, an investigator constructed a histogram and found that the distribution of housing prices was heavily skewed to the right. Which of the following statistics will best represent the center of ...
*May 13, 2014 by emma*

**Stats**

Can someone please show me how to solve this step by step. I'm trying to understand the whole concept but I'm getting confused... Find the sample linear correlation coefficient between x and y: x: 5, 2, 2 y: 7, 4, 7 x^2: 25, 4, 4 y^2: 49, 16, 49 xy: 35, 18, 14 I know how to ...
*June 29, 2013 by y912f*

**stats please help test tom**

When a computerized generator is used to generate random digits, the proability that any particular digit in the set {0,1,2, . . .,9} is generated on any individual trial is 1/10-0.1. suppose that we are generating digits one at a time and are interested in tracking ...
*January 24, 2007 by david*

**Stats- need someone to check **

Doing this assignment and was wondering if i got the right answers According to the Census Bureau publication Current Population Reports, the probability distribution for household size (number of people per household, say X) in the United States is as follows. For the ...
*February 7, 2011 by Ryan*

**stats:find the mean**

please help! i know exactly how to find the mean but i am having a problem finding the midpoints. couldn't get them right :( salary employees 5,001- 10,000 == 16 10,001-15,000 == 15 15001-20,000 == 11 20,001-25,000 == 15 25,001-30,000 == 23
*May 15, 2010 by sha*

**math**

What is outliers? how do you solve this problem? please give me some answers. In statistics outliers are data points that very far from the mean. There are some rules of thumb for determining them, but I don't recall them right off hand and don't want to reach for the text ...
*September 6, 2006 by Brittney*

**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**

Determine the following random variables discrete or continuous: a)Number of fish I caught during 2 hours? I said: discrete b)Temperature of a coffee cup? I said: continuous c)Height of a 2-year-old maple tree? I said: continuous d) Number of credit cards I have in my wallet? ...
*February 8, 2014 by Ashley*

**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**

write a brief paragraph addressing the question. Which is more likely, that a person is killed by lightning, or that a person is killed by lightning while playing golf in a thunderstorm? I believe it would be while playing golf due to holding the metal golf club, acting as a ...
*October 14, 2009 by CM*

**Stats**

A random sample of dates taken from headstones at a cemetery in Pleasanton, California, showed an average lifespan of 70 years with a standard deviation of 20 years. Assuming the distribution is unimodal, which of the following is most likely a good description of the ...
*October 9, 2011 by Anonymous*

**American Government**

1.)Most amendments have _____. =a)expanded and clarified the principles embodied in the Constitution b)radically changed and undermined the principles of the Constitution c)been approved just by Congress d)restricted the right to vote 2.)What is the defining right of a ...
*July 20, 2010 by Ariel *

**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 < ė < 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*

**Did i do this right??? STATS**

3. In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that: (A) exactly two will have this mild side effect (B) at least three will have this ...
*October 26, 2011 by Jen*

**stemplot one more question**

No, I don't think you should round the data. The stems should probably be the numbers 13,14,15,...,19 Line them up like this with the leafs to the right S L 13 |9 14 |8,9 15 |2,8 . . . You can finish it. Starting the stems with 1 would accomplish nothing here. You can order ...
*August 30, 2006 by Anonymous*

**Chemistry130**

Can someone please help me with this? Are these substances acids or bases? 1. Tums- Base, right? 2. Vitamin C- Acid, right? 3. Nail Polish Remover- Base or Acid? 4. Coca Cola Pop- Acid, right? 5. Cream of Tarter- Acid, right? 6. Calamine Lotion- Base or Acid? 7. Lemon Juice- ...
*October 13, 2009 by Adam*

**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*

**Physics**

If I wanted to right SIGMA F = ma in the proper notation what would I put above and below SIGMA Would I put a lower case "n" above SIGMA and "i = 0" below it and then put a subscript "i" under the "F" thank you I have been woundering about this as it makes sense to include ...
*January 6, 2010 by Kate*

**Physics**

If I wanted to right SIGMA F = ma in the proper notation what would I put above and below SIGMA Would I put a lower case "n" above SIGMA and "i = 0" below it and then put a subscript "i" under the "F" thank you I have been woundering about this as it makes sense to include ...
*January 6, 2010 by Kate*

**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**

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*

**Chemistry HELP**

Can someone help me with these....I just need to make sure they are right and if not can you help me figure out the right one's? What is the chemical name of the active ingredient in each item.... 1. Tums- calcium carbonate, right? 2. Vitamin C- ascorbic acid, right? 3. Nail ...
*October 13, 2009 by Adam*

**STATS**

Scientists wish to test the mind-readiing ability of a person who claims to have ESP. They use five cards with different and distinctive symbols( square, cicrle, triangle, line, squiggle). Someone picks a card at random and thinks about the symbol. The mind-reader must ...
*October 17, 2011 by JONATHAN*

**Stats**

A student hands each of 300 classmates 2 chocolates side by side on a plate. Of the 300 students, 171 choose the chocolate thatĒs on their right hand side, and the remaining 129 choose the chocolate thatĒs on their left. The student says, “ThatĒs just like tossing a coin...
*July 29, 2013 by Help please!!!*

**Stats**

I need help with this problem for school. For the first one i got .3758 and second 1.6, but i don't think they are right. My calculations are off It is known that about 20% of car insurance policies include emergency road service. Suppose we randomly select 10 car insurance ...
*February 16, 2011 by John*

**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*

**civics**

Which of the following most accurately describes the right of American citizens to privacy? A. the right to privacy is determined entirely by the states on a case-by-case basis B. the right to privacy is explicitly granted in the Constitution C. the Supreme Court has ruled ...
*March 6, 2013 by gretchen*

**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*

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