conint: Calculate the Confidence Interval

Description

Calcalte the confidence interval of the mean from a population or the difference between two means from two populations.

Usage

conint(TrnX = NULL, TrnY = NULL, m, n1, n2, s1, s2, side = "both", alpha = 0.95, method = "n")

Arguments

TrnX

the observed values of a random sample from a distribution

TrnY

the observed values of a random sample from another distribution

the mean of the observed values of the first random sample

the number of the random variables of TrnX

the number of the random variables of TrnY

the standard variance of TrnX

the standard variance of TrnY

side

whether the confidence interval is one or two sides

alpha

the significance level of the confidence level

method

Are we going to calculate the confidence interval of the mean from a population or the difference between two means from two populations? Is the population from a normal distribution, a t distribution or a chi-square distribution?

Value

a: the left end point of the confidence interval
b: the right end point of the confidence interval

Details

The confidence interval consists of some information such as the significance level and whether it is one or two sides. The random samples may come from normal distributions,t distributions or chi-square distributions.

Examples

Run this code

conint(m=67.53,n1=25,s1=10,side="both",alpha=0.95,method="n") #63.61 71.45