Question

The table contains a subset of data reported in 2013 by the World Health Organization. Physicians/10,000people and life expectancy are correlated at r=.86.

COUNTRY	PHYSICIANS/10,000 PEOPLE	LIFE EXPECTANCY
bangladesh	3.6	70.00
kenya	1.8	60.00
USA	24.2	79.80
japan	21.4	86.50
italy	38.0	84.6
----------------	----------------------------------------------	----------------------------
MEAN	17.8	76.18
STANDARD DEVIATION	15.16	11.07

What is the predicted life expectancy (z-score AND raw score) of a country with 20.0 physicians/10,000 people?

Answer 1

Prediction life expectancy ( 20 ) = 65.0107 + 0.6275 * 20

= 78.56

Z score = ( 20 - 17.8 ) / 15.16

Raw score =19.9997 PL??