28. John Isaac Inc., a designer and installer of industrial signs, employs 60 pe

Question

28. John Isaac Inc., a designer and installer of industrial signs, employs 60 people. The com tional ary pany recorded the type of the most recent visit to a doctor by each employee. A na assessment conducted in 2010 found that 53% of all physician visits were to prim care physicians, 19% to medical specialists, 17% to rical specialists, and 11% to emergency departments. Test at the 0.01 significance level if Isaac employees die nificantly from the survey distribution. Here are their results: d Visit Type Primary care Medical specialist Surgical specialist Emergency Number of Visits 29 16 4

Explanation / Answer

Ans:

Chi square Test statistic=4.583

df=4-1=3

p-value=CHIDIST(4.583,3)=0.2050

As,p-value>0.01,we fail to reject the null hypothesis.

There is not sufficient evidence to conclude that isaac employees differ significantly from the survey distribution.

Type Observed(O) pi Expected(E) (O-E)^2/E Primary 29 0.53 31.8 0.247 Medical 11 0.19 11.4 0.014 Surgical 16 0.17 10.2 3.298 Emergency 4 0.11 6.6 1.024 Total= 60 1 60 4.583

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

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