Question

using the Chi-square Hypothesis Test. with .05 level of significance. What is the p value and the test statistic? How do you find them?

	Location
Error Type	Midtown	Uptown	Total
Caller Verification	15	12	27
Provided Correct Information	17	11	28
Correct Update	14	16	30
Other Error Types	10	16	26
Total	56	55	111

Answer 1

Let's do calculation in excel:

Let's find test statistic value and p-value in excel:

The formulae used on the above excel-sheet are as follow:

Decision rule:

1) If p-value < level of significance (alpha) then we reject null hypothesis

2) If p-value > level of significance (alpha) then we fail to reject null hypothesis.

Here p value = 0.0.3720 > 0.05 so we used 2nd rule.

That is we fail to reject null hypothesis