# Minitab Notes for Activity 6

## Finding the P-value for a Chi-Squared Test (Questions 9,22)

Since we didn't use the built in routines of Minitab to find the test statistic
(it doesn't do a Chi-Squared Goodness of Fit Test), it didn't give us a p-value.
The p-value is the probability of being more extreme
than
the
test
statistic. Since this is a right tail test, it is the probability of being
to the right of the test statistic.

- Choose Calc / Probability Distribution / Chi-Square
- Choose Cumulative Probability
- Enter the proper number of degrees of freedom (one less than the number
of categories)
- Click on Input Constant. Enter your test statistic as the constant
- Click OK
- Minitab returns the area to the left of the test statistic, but we need
the area to the right. Subtract the probability Minitab gives you from 1
to find the p-value.