Question

Consider the following data, which represent the number of times individuals have visited a physician in the last 12 months.

2, 5, 4, 3, 3, 1, 0, 1, 0, 0, 7, 13, 5, 4, 3, 6, 9

i. Physicians’ offices in the area budget for 3 visits per year, per patient. Suppose researchers are interested in whether individuals do not visit their physicians exactly 3 times per year. Construct an appropriate pair of hypotheses that could be used to test this.

ii. Explain why a nonparametric approach may be appropriate for this data situation.

iii. By hand, use the Wilcoxon Signed-Ranks Test to evaluate your hypotheses using the data. What is your conclusion?

iv. Reproduce your test using statistical software.

v. Now assume researchers want to know if individuals visit more than three times per year. What can you conclude?

Answer 1

4. I use R software for the solution .

x<-c(2,5,4,1,0,1,0,0,7,13,5,4,6,9)
wilcox.test(x, mu = 3, alternative = "two.sided")

Ignore the warning message.

If u are satisfied please give a thumps up. Else comment please.