Patients Exercise 2.135 on page 100 discusses a study showing the recurrence time to infection at the point of insertion of the catheter for kidney patients using portable dialysis equipment. There are 38 patients, and the mean time to infection is xÌ… = 111.7 days with s = 144.0.

(a) Find a 99% confidence interval for the mean time to infection for these patients. Give the best estimate, the margin of error, and give and interpret the confidence interval.

(b) Is it reasonable to find a patient with a time to infection of 24 days? How about 152 days?

(c) Is it reasonable to find the mean time to infection in the population is 24 days? How about 152 days?  

Exercise 2.135 on page 100

Table 2.28 gives data showing the time to infection, at the point of insertion of the catheter, for kidney patients using portable dialysis equipment. There are 38 patients, and the data give the first observation for each patient. The five number summary for these data is (2, 15, 46, 149, 536).

Table 2.28

Transcribed Image Text:

12 24 96 13 6. 22 53 149 5 15 17 39 34 132 130 292 402 15 23 22 54 152 536 27 113 185 63 152 30 141 447 119 190 511