# Stats

1,396 results

stats
is there a good, relevant sites where i can get stats extra help?

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 ...

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.

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...

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...

Prob & Stats
A medical researcher gave 100 patients a new drug to see if it reduces their blood pressure? Did the new drug reduce the patients' blood pressure? Write your hypothesis mathematically. Not sure how to do this, Prob & Stats has been quite a struggle for me

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...

stats
If SS = 50 and s^2 = 10, what is n?

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...

College Stats
Is .09 less than .05?

stats
given n=74 an x=32.find ^p and ^q

stats
if we reject the null hypothesis, we conclude that:

stats
Compute the following and show your steps 7! /5!.

stats
what does it mean to say alpha is set at 0.5

math stats
how do i draw a histogram for the data (8,0,7,5,5)

Stats
What is the spread? How can it be found from a set of numbers?

math stats
Calculate p ̅. x1 20 n1 50 x2 55 n2 100

Stats
Which of the following numbers could be a proabilty of an event 0, 1.15, 0.03, -0.43, 1, 0.34

Stats
How do you find SSA, SSB & SSE??

stats
A sample has a mean of M = 73 and a standard deviation of s = 5

stats
how does one make a residual plot please?

Stats
What are variance and covariance? What do they mean? What are their differences/relationship?

geography
what are some tricks that will; help me remember the stats and the capitles

stats
Let z be a random variable with a standard normal distribution, P(-1.9<=z<=2.1)

stats
Mean is 60 and standard deviation is 7. what percentage is 73 and below.

Stats
If a confidence interval for the mean is 24.8 < ì < 29.6. What is the margin of error?

maths stats
Please unscramlbe aaeebllnn which is a name. Thanks

Stats
what is the range of data with a total of 1000 values?

bussi./stats
what is the probability that a loaf of bread is between 22.75 and 23.00?

STATS
If Ho: μ = 50 and Ha: mu. = 59 and s = 10 what is αlpha if x exceeds 56for n=25

stats 250
A z-score of z = +3.00 indicates a location that is the following

stats
what is the lower and upper limit for -645.321?

Stats
Explain what it means to have a deviation score of -18

stats
how do you construct a relative frequency table based on an ogive?

stats
How would r change if researchers had recordered the proportions?

stats
if you know the mean and standard deviation, how do you determine the proportion that will and will not be included

stats
what is the distinction between repeated measurements and matched items?

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?

health/stats
can cholesterol follow a normal distribution exactly? why or why not?

Stats
let x be a binomial random variable with expected valuee 4 and variance 2 a) What is P(X=3)? b) What is P(X<6)?

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

stats
x and y independent exponential r.v with respctive parameters 2 and 3. find the cdf and density of z = x/y.

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

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)

psy Stats.
how do you Calculate percentage when given standard deviation and mean

Stats
Can you tell me what ∑xy means? Like is in the sum of all x times y or what?

Stats
Find the mean and standard deviation of the following probability distribution: x 1 2 3 P(x) 0.3 0.5 0.2

stats
if income in the us was normally distributed, what z-score would represent the top 1%?

stats
using a calculator need p value on a r tailed test if the n=9 and the t is 3.204

stats & prob.
Given the values of n=5, p= 0.15, and (1-p)=0.85, calculate the standard deviation of the data.

stats
Given a standard normal variable. What is the probability that z lies between 1.48 and 2.13

stats
What does the best estimate mean after doing the liner regression equation

Stats help
What does the best estimate mean after doing the liner regression equation

stats
how to find the are for a standard normal curve that cuts off the upper 1.1%

Stats
Need help finding the area under the normal curve between z = -1.0 and z = -2.0?

stats
what is the probability that a 6 digit phone number contains at least one 8?

AP Stats
transformation necessary to linearize the data. Be sure to convince me that you understand.

Stats
What is the best measure to describe the total variability in a population or sample?

statistics
what does this mean i have to do this in a spreadsheet Descriptive stats for each numeric variable

Stats
Where can I find fuel efficient car sales statistic for recent years?

college Stats
If Y has a geometric distribution with success probability p, show that P(Y= an odd integer)= p/(1-(q^2))

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

stats
What are the steps to solve P(x>k)=.025 when the mean is 500, standard deviation is 100

stats
Find the probability that the company will meet its goal on a particular 50 miles of line

What data and stats do you need to know in order to identify profitable nations in which to export.

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)

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

stats
(a) Suppose n = 26 and p = 0.30. Can we approximate p̂ by a normal distribution? Why? (Use 2 decimal places.)

stats
7. Give and interpret the 95% confidence interval for the hours of sleep a student gets.

Stats
The probability that the twelve graduates will have a mean salary over \$50,000 is...

Stats
What types of bias could be in a survey asking students how many classes they take per semester? Thanks -MC

Stats
The heights of women in the US approximately follow a bell shaped curve. What do you think that means?

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

Stats
Six letters are picked. Find the chance that they can be arranged to form the word RANDOM.

stats
what are the mean and standard error when using central limit theorem for dichotomous variable

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%

Stats
Find the score that separates the top 75% from the bottom 25% if the Mean is 100 and the Standard deviation is 15

if a die is tossed four times what is the probability of getting one six

Stats Help Help
Find the variance for the given data. Round your answer to two decimal places. 5.0, 8.0, 4.9, 6.8, and 2.8

Stats
Why is it important to know the possible errors we might make when rejecting or failing to reject the null hypothesis?

FST (functions, stats, and trigonometry)
what is the equation for the axis of symmetry for the function f(x)=IxI?(absolute value)

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 ?

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

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 ?

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 ?

stats
women age 20-29 is 36ml staandard deviation 7ml. What is probability greater than 45ml and between 30 and 62 ml

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.

STATS
The following confidence interval is obtained for a population proportion, p:0.556 < p < 0.584. What is the point estimate, p?

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)

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

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.

stats
X is normally dsitributed with mean 250 and standard deviation 40. what value of X does only top 15% exceed?

Stats
for a sample of n=20 how large a Pearson correlation is necessary to be statistically significant for a two tailed test

if a die is tossed four times what is the probability of getting at least one six

if a die is tossed four times what is the probability of getting three odd numbers

STATS
What is the probability that the average salary of a sample of 49 part time bank teller will be less than \$22,600?

Stats
A normal distribution has a mean of 120 and a standard deviation of 20. What score corresponds to the 90th percentile?

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?

buss/stats
what is it called when all the items in the population have the same chance of being selected for the sample?

Stats
a die is rolled three times. find the chance that not all the rolls show 3 or more spots

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