Question

The following observations are lifetimes (days) subsequent to diagnosis for individuals suffering from blood cancer.

116	182	255	418	442	461	517	739	744	789	808
865	924	983	1025	1062	1064	1165	1191	1222	1222	1251
1278	1291	1357	1369	1409	1456	1478	1519	1578	1578	1599
1603	1605	1697	1735	1799	1815	1853	1899	1925	1966

a. Calculate and interpret a confidence interval with a 99% confidence level for true average lifetime. [Hint: x = 1192.0 and s = 506.5.]

(Round your answers to one decimal place.)

(___ , ____)

Answer 1

Confidence Interval



Lower Limit =
Lower Limit = 983.5999
Upper Limit =
Upper Limit = 1400.4001
99% Confidence interval is ( 983.6 , 1400.4 )

We are 99% confident that the true average lifetimes (days) subsequent to diagnosis for individuals suffering from blood cancer lies in the interval ( 983.6 , 1400.4 ).