An educator randomly selects 300 statistics students to check whether there is a

Question

An educator randomly selects 300 statistics students to check whether there is a relationship between a student passing the course and his or her number of absences. These results were reported. For a chi-square test of independence, what type of error may have been made? Number of Classes Missed 0-12-3 30 Passed Statis tics Course Didnt Pass Statistics Course Total 4or More 100 80 180 T otal 180 120 300 30 80 Type I the P-value was greater than o 05 o Type I the P value was less than 0 05 Type ll the P-value was greater than 0 05 Type Il the P-value was less than o 05 oEither type of error is possible

Explanation / Answer

The statistical software output for this problem is:

Contingency table results:
Rows: var8
Columns: None

Chi-Square test:

Since p - value is greater than 0.05, we do not reject Ho and hence, we might make Type II error.

Option C is correct.

0-1 2-3 4 or More Total Passed 30 50 100 180 Didn't Pass 10 30 80 120 Total 40 80 180 300

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