FAQ/zequiv - CBU statistics Wiki
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# Equivalence test formulation of one sample z-test

For a population mean, $$\theta$$ estimated by a sample mean:

H0: $$\theta \leq$$-d or $$\theta \geq$$ d and HA : -d $$\leq \theta \leq$$ d

If ind equals 1 then we reject nonequivalence so -d $$\leq$$ $$\theta$$ $$\leq$$ d otherwise we accept the null hypothesis of equivalence for the given type II error, beta.

[TYPE INTO R THE DESIRED INPUTS D, N, MEAN AND BETA USING VALUES IN FORM BELOW].

beta <- 0.05
d <- 0.2
n <- 10
mean <- 0

[THEN COPY AND PASTE THE BELOW INTO R]

cv <- sqrt(qchisq(p=beta, df=1, ncp=n*d^2))
cv2 <- sqrt(n)*cv
ind <- 0
if (mean < cv2) ind = 1
print(ind)

None: FAQ/zequiv (last edited 2013-03-08 10:17:39 by localhost)