# stats(help)

1,415 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

### business

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

### Stats please help

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

### Stats please help

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

### Stats please help

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?