midx1.w09.sol.sec1

midx1.w09.sol.sec1 - ACTSC 433 - WINTER 2009 (SECTION 1)...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
A i ds : Tim e: E xa m iner : A CTSC 4 33 - WINTER 2009 (SECTION 1 ) MID - TERM EXA M #1 - FEBRU A R Y 3200 8 'S u. ~~ ~ ~ e ~ ~ n l u ~l I' ~ NAME : _ Ca l cul a t or 1 h o u r J o h nn y S . H . Li Q u es tion M a x imu m Ma r k 1 1 2 2 8 3 8 4 1 3 T ota l 4 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1. In a study of survival times (X), you are given the following data values (measured in years) : (a) Compute 3 5 (50), the empirical estimate of 3(50). [2 ma r ks] (b) Compute 8(50), the Nelson-Aalen estimate of 3(50). f" "' -- "- t+ \ .- I - \Cro) ~ 1--\ (~O) - , " 4 -::: .. . 0- 4 ~ - - - - ' - ' -- - o 5 - ts o~Ca~ll S(~O) - e . ---. . - -- -
Background image of page 2
u p p ose that a data val u e of 9 0 is added to t h e orig i nal data set. H ow would your a n swers to pa r ts (a) a n d (b) c h a n ge? ( In c r ease, d ecrease, or re m ai n s un cha n ged?) Ex pl ai n b ri ef l y . [3 m a rk s] AV\s . AV\s <1V\C~ <X .. Qa .. r~ froro~ J - ~j11 J 1 "l . " ., k S~, , ( - k . t~O" . J \: - "" ~Q , . eL")
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/30/2009 for the course ACTSC 433 taught by Professor Johnny during the Winter '09 term at Waterloo.

Page1 / 7

midx1.w09.sol.sec1 - ACTSC 433 - WINTER 2009 (SECTION 1)...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online