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Confidence Interval of a Proportion

Given N, n, and a confidence percentage, this will calculate the estimation of confidence interval for the population proportion π including the margin of error

Confidence Interval/Hypothesis Testing for the Difference of Means

Given two large or two small distriutions, this will determine a (90-99)% estimation of confidence interval for the difference of means for small or large sample populations.

Also performs hypothesis testing including standard error calculation.

Also performs hypothesis testing including standard error calculation.

F Test Statistic

Calculates the F-test statistic for two populations

Ordered and Unordered Partitions

Given a population size (n) and a group population of (m), this calculator determines how many ordered or unordered groups of (m) can be formed from (n)

Population Growth

Determines population growth based on an exponential growth model.

Ratios

* Simplifies a ratio of a:b

* Given a ratio in the form a:b or a to b, and a total population amount, this calculator will determine the expected value of A and B from the ratio.

* Given a ratio in the form a:b or a to b, and a total population amount, this calculator will determine the expected value of A and B from the ratio.

Sample Size Reliability for μ

Given a population standard deviation σ, a reliability (confidence) value or percentage, and a variation, this will calculate the sample size necessary to make that test valid.

Sample Size Requirement for the Difference of Means

Given a population standard deviation 1 of σ_{1}, a population standard deviation 2 of σ_{2} a reliability (confidence) value or percentage, and a variation, this will calculate the sample size necessary to make that test valid.

Survival Rates

Given a set of times and survival population counts, the calculator will determine the following:

Survival Population l_{x}

Mortality Population d_{x}

Survival Probability p_{x}

Mortality Probability q_{x}

In addition, the calculator will determine the probability of survival from t_{x} to t_{x + n}

Survival Population l

Mortality Population d

Survival Probability p

Mortality Probability q

In addition, the calculator will determine the probability of survival from t

In 1910, the population of math valley was 15,000. If the population is increasing at an annual rate

A city has a population of 240,000 people. Suppose that each year the population grows by 8%. What w

Find Mean 106 and standard deviation 10 of the sample mean which is 25

Find Mean and standard deviation

The population of goats on a particular nature reserve t years after the initial population was sett

a confidence interval for a population mean has a margin of error of 0.081

Solve the problem

Find Requested Confidence Value

data below consists of the pulse rates (in beats per minute) of 32 students. Assuming ? = 10.66,

HELP SOLVE

HELP SOLVE

HELP SOLVE

HELP SOLVE

Height and weight are two measurements used to track a child's development. TheWorld Health Organiza

A random sample of 144 with a mean of 100 and a standard deviation of 70 is known from a population

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In order to test if there is a difference between means from two populations, which of following ass

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Construct a confidence interval of the population proportion at the given level of confidence. x = 1

The IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a) What i

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population MEAN OF ENVIRONMENTAL SPECIALIST SALARY IS $62000.A RANDOM SAMPLE OF 45 SPECIALIST IS DRA

A colony of 100 bacteria doubles in size every 34 hours. What will the population be 68 hours from n