Demonstrate that the random variable Y follows a chisquared

Demonstrate that the random variable \"Y\" follows a chi-squared distribution.

Y=((n-1)s2)/sigma2

Assume normally distributed where n=8 mean=100 and standard deviation=10

Can this exercise be completed if the mean and standard deviation is not specified?

Solution

without standard deviation, you cannot do this exercise but without mean,you can do this.