Sir R. A. Fisher, a famous statistician, showed that the critical values of a chi-square distribution can be approximated by the standard normal distribution. FORMULA ATTACHED where v is the degrees of freedom and zk is the z-score such that the area under the standard normal curve to the right of zk is k. Use Fisher's approximation to find z20.975 and z20.025 with 90 degrees of freedom. Compare the results with those found in the table of the chi-square distribution. In Fisher's approximation the value of z20.975 is _______. Find Fisher's approximation for z20.025 which is ______. Now find the actual values of z20.975 and z20.025 which is _____. Use a chi-square distribution table to find z20.975 with 90 degrees freedom. Which is ______. Use a chi-square distribution table to find z20.025 with 90 degrees freedom. Which is ______.
Sir R. A. Fisher, a famous statistician, showed that the critical values of a chi-square distribution can be approximated by the standard
FORMULA ATTACHED
where v is the degrees of freedom and zk is the z-score such that the area under the standard normal curve to the right of zk is k. Use Fisher's approximation to find z20.975 and z20.025 with 90 degrees of freedom. Compare the results with those found in the table of the chi-square distribution.
In Fisher's approximation the value of z20.975 is _______.
Find Fisher's approximation for z20.025 which is ______.
Now find the actual values of z20.975 and z20.025 which is _____.
Use a chi-square distribution table to find z20.975 with 90 degrees freedom. Which is ______.
Use a chi-square distribution table to find z20.025 with 90 degrees freedom. Which is ______.
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