For a chisquared distribution find X2 such that pX2 X 2 alp

For a chi-squared distribution, find X^2 such that p(X^2 > X ^2 alpha) = 0.01 when u = 21; p(X^2

Solution

using tables of chi square test

a)

alpha = 0.01

df = 21

X^2 = 38.932

b)

alpha = 1 - 0.95=0.05

df = 6

X^2 = 12.592

c)

alpha = 1 -0.015 = 0.985

alpha / 2 = 0.4925

df = 10

X^2 = 9.342