Four surgical procedures currently are used to install pacemakers. If the patien

Question

Four surgical procedures currently are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is called a "clear" operation. A heart center wants to compare the proportion of clear operations for the four procedures, and collects the following numbers of patients from their own records: They will use this information to test for a difference among the proportion of clear operations using a chi-square test with a level of significance of 0.05. True or False: Referring to Table 11-5, the null decision made suggests that the four procedures at have different proportions of clear operations. A. False B. True

Explanation / Answer

The statistical software output for this problem is:

Contingency table results:
Rows: var5
Columns: None

Chi-Square test:

Since p - value is less than 0.05, we reject the null hypothesis.

Hence,

Option A True is correct.

var6 var7 var8 var9 Total L 27 41 21 7 96 NL 11 15 9 11 46 Total 38 56 30 18 142

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.